# Physics 50 example problems

## By Peter Beyersdorf

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#### Description

This is a video podcast of solutions to example problems from Dr. Beyersdorf's Physics 50 class at San Jose State University. Several episodes will be published each week including solutions to the previous week's homework and examples that may be useful in understanding current homework or preparing for upcoming exams.

Name | Description | Released | Price | ||
---|---|---|---|---|---|

1 | Video14-51 Tube of Mercury-fluid mechanics | For a tube containing mercury and water, find the difference in height of the mercury and water using Pascal's law | 14 11 2006 | Free | View In iTunes |

2 | Video14-47 Mass of a Planet-fluid mechanics | Given some measurements of the pressure in a fluid taken on the surface of an unknown planet, use Pascal's law and the universal law of gravitation to find the mass of the planet. | 14 11 2006 | Free | View In iTunes |

3 | Video14-37 Airplane Wing-fluid mechanics | Use Bernoulli's Equation to find the force on an airplane wing and then find the net force acting on the airplane. | 14 11 2006 | Free | View In iTunes |

4 | Video14-29 Shower Head-fluid mechanics | Use the continuity equation to find the exit velocity for water in a shower head | 14 11 2006 | Free | View In iTunes |

5 | Video14-25 Wood Floating in Oil-fluid mechanics | For a block of wood floating on top of a layer of water and below a layer of oil, find its mass and density given how high it is floating | 14 11 2006 | Free | View In iTunes |

6 | Video14-7 Gauge Pressure-fluid mechanics | Determine the gauge pressure at a given distance below the surface of a fluid using Pascal's law | 14 11 2006 | Free | View In iTunes |

7 | Video14-3 Density of Gold-fluid mechanics | Find the density of a piece of metal given its mass and volume. Is the metal gold? | 14 11 2006 | Free | View In iTunes |

8 | Video13-33 Cheese on a Spring-simple harmonic motion | For a piece of cheese oscillating on the end of a spring, find out how far the spring will be stretched when the oscillations stop. | 9 11 2006 | Free | View In iTunes |

9 | Video12-9 Gravitational Force Acting on the Moon-gravitation | Find the gravitational force acting on the moon from the Earth and Sun for moon at three different points in the lunar orbit | 9 11 2006 | Free | View In iTunes |

10 | Video11-13 Beam in Equilibrium-equilibrium | Find the tension in ropes holding up a beam in equilibrium. | 6 11 2006 | Free | View In iTunes |

11 | Video10-63 Block and Cylinder-dynamics of rotational motion | Find the acceleration of a block on a plane that is attached to a rotating cylinder which has non-negligible moment of inertia | 24 10 2006 | Free | View In iTunes |

12 | Video10-47 Gyroscope-dynamics of rotational motion | Determine the direction that a gyroscope precesses | 24 10 2006 | Free | View In iTunes |

13 | Video10-33 Power of a Motor-dynamics of rotational motion | Determine the lifting capacity of a motor with a given power and rotation rate | 24 10 2006 | Free | View In iTunes |

14 | Video10-19 Falling Yo Yo-dynamics of rotational motion | Find the acceleration of a falling yo-yo and the tension in the string as it falls | 24 10 2006 | Free | View In iTunes |

15 | Video10-7 Frictional Torque-dynamics of rotational motion | Find the frictional torque necessary to slow a spinning object a given amount in a given time | 24 10 2006 | Free | View In iTunes |

16 | Video10-3 Calculating Torque-dynamics of rotational motion | Find the torque exerted on an object by each of three different forces | 24 10 2006 | Free | View In iTunes |

17 | Video10-1 Calculating Torque-dynamics of angular motion | Find the torque that a force exerts on a wrench for six different configurations | 24 10 2006 | Free | View In iTunes |

18 | Video9-100 Moment of Inertia of a Cone-rotation of rigid bodies | Calculate the moment of inertia for a cone. | 17 10 2006 | Free | View In iTunes |

19 | Video9-85 Pulley With Inertia-rotation of rigid bodies | Solve for the speed of a falling block that must pull another block and spin a pulley that has inertia. | 17 10 2006 | Free | View In iTunes |

20 | Video9-63 Speedometer-rotation of rigid bodies | Relate the linear velocity of a car to the angular velocity of the axle as read by the speedometer | 17 10 2006 | Free | View In iTunes |

21 | Video9-52 Parallel Axis Theorem for a Wheel-rotation of rigid bodies | Use the parallel axis theorem to find the moment of inertia for a wheel rotating about a point on its rim. | 17 10 2006 | Free | View In iTunes |

22 | Video9-41 Moment of Inertia of a Wagon Wheel-rotation of rigid bodies | Find the moment of inertia for a wagon wheel given the size and shape of its components. | 17 10 2006 | Free | View In iTunes |

23 | Video9-37 Moment of Inertia of a Distribution of Masses-rotation of rigid bodies | Find the moment of inertia for a distribution of masses. | 17 10 2006 | Free | View In iTunes |

24 | Video9-29 Drill Speed-rotation of rigid bodies | Determine the linear acceleration of a point on the edge of a drill bit, given its angular velocity. | 17 10 2006 | Free | View In iTunes |

25 | Video9-21 Helicopter Rotor Blades-rotation of rigid bodies | Relate the parameters of angular motion for a helicopter rotor blade to the parameters of linear motion for a point on the tip of the blade. | 17 10 2006 | Free | View In iTunes |

26 | Video9-9 Rotating Flywheel-rotation of rigid bodies | Calculate the change in the angular velocity and angular displacement of a flywheel that is slowing down due to friction | 17 10 2006 | Free | View In iTunes |

27 | Video9-5 Instantaneous Angular Velocity-rotation of rigid bodies | Relate an expression for the angular displacement of a merry-go-round to its angular velocity and angular acceleration | 17 10 2006 | Free | View In iTunes |

28 | Video9-1 Angles and Arc Lengths-rotation of rigid bodies | Relate an angle to arc lengths subtended by the angle | 17 10 2006 | Free | View In iTunes |

29 | Video8-45 Center of Mass-momentum and collisions | Determine the center of mass of an object | 10 10 2006 | Free | View In iTunes |

30 | Video8-39 Head on Elastic Collision-momentum and collisions | Find the velocity of a ball after a head-on elastic collision | 10 10 2006 | Free | View In iTunes |

31 | Video8-35 Speed of a Bullet-momentum and collisions | Find the speed of a bullet by using the work-energy theorem and conservation of momentum during a collision with a block | 10 10 2006 | Free | View In iTunes |

32 | Video8-27 Collision of Two Pucks-momentum and collisions | Find the velocity of a puck after collision with another puck | 10 10 2006 | Free | View In iTunes |

33 | Video8-19 Compressed Spring-momentum and collisions | Find the velocities of two masses after they are launched by a spring | 10 10 2006 | Free | View In iTunes |

34 | Video8-17 Hip Check-momentum and collisions | Find the velocity of a hockey player after being hip-checked | 10 10 2006 | Free | View In iTunes |

35 | Video8-1 Momentum of a Truck-momentum and collisions | Find the momentum of a moving truck | 10 10 2006 | Free | View In iTunes |

36 | VideoGas Guzzling-work, energy, and power | Solutions to Homework 7 - Gas Guzzling | 10 10 2006 | Free | View In iTunes |

37 | VideoMidterm 2 Solutions-fall 2006 | Solutions to midterm #2 | 5 10 2006 | Free | View In iTunes |

38 | VideoHomework 6 - Design Your Own Rollercoaster - solutions | Solutions to the homework where you were asked about the parameters of a rollercoaster | 3 10 2006 | Free | View In iTunes |

39 | Video7-76 Minimum Speed of a Moving Block-conservation of energy | Find the angle of a ramp that causes a block sliding up the ramp to have the minimum speed after sliding a certain distance | 26 9 2006 | Free | View In iTunes |

40 | Video7-51 Bungee Jump-conservation of energy | Find the parameters of a bungee cord necessary for a given bungee jump | 26 9 2006 | Free | View In iTunes |

41 | Video7-46 Roller Coaster Loop-conservation of energy | Find the minimum height of a roller-coaster hill for the coaster to go over a loop successfully. | 26 9 2006 | Free | View In iTunes |

42 | Video7-41 Legal Physics-work and energy | Find the speed a car was traveling given the length of the skid marks it left when it stopped. | 26 9 2006 | Free | View In iTunes |

43 | Video7-33 Energy Diagram for Hydrogen-work and energy | Find the force on a particle from the energy diagram. Is it attractive or repulsive? | 26 9 2006 | Free | View In iTunes |

44 | Video7-29 Friction on a Book-work and energy | Check if friction is a conservative force or not by determining the work it does when a book sliding on a table moves in a closed path | 26 9 2006 | Free | View In iTunes |

45 | Video7-15 Energy in a Spring-work and energy | Find the energy stored in a spring when it is stretched or compressed | 26 9 2006 | Free | View In iTunes |

46 | Video7-2 Lifting a Sack of Sugar-work and energy | Find the force necessary to lift a sack of sugar. Find the work done. | 26 9 2006 | Free | View In iTunes |

47 | Video6-45 a Tandem Bike-work and energy | Find the power necessary to ride a bike at a given speed | 26 9 2006 | Free | View In iTunes |

48 | Video6-33 Compressing a Spring-work and energy | Find the work necessary to compress or stretch a spring | 26 9 2006 | Free | View In iTunes |

49 | Video6-14 Throwing a Rock-work and energy | Find the initial speed and eventual height of a thrown rock using the work energy theorem | 26 9 2006 | Free | View In iTunes |

50 | Video6-3 Reeling in a Fish-work and energy | Find the work done reeling in a fish | 26 9 2006 | Free | View In iTunes |

51 | VideoHW 5 Rides and Elevators-application of newtons laws | Solutions to Homework 5 - rides and elevators | 26 9 2006 | Free | View In iTunes |

52 | VideoAtwoods Machine-application of newtons laws | We look at the behavior of an elevator system known as Atwood's machine that consists of two masses held by a rope that goes over a pulley. | 21 9 2006 | Free | View In iTunes |

53 | Video5-85 Blocks and Pulleys-application of newtons laws | We find the acceleration of a pair of blocks that are connected to each other by a rope and a system of pulleys, | 19 9 2006 | Free | View In iTunes |

54 | Video5-43 Swinging Stone-application of newtons laws | We find the maximum speed a stone can be swung at when it is on the end of a rope before that rope breaks | 19 9 2006 | Free | View In iTunes |

55 | Video5-30 Cat on a Block-application of newtons laws | We find the acceleration of a block being pulled along a table by a rope and before and after a cat jumps onto the block | 19 9 2006 | Free | View In iTunes |

56 | Video5-21 Free Body Diagrams of Blocks-application of newtons laws | We draw the free body diagrams for two blocks on an incline connected by a rope over a pulley | 19 9 2006 | Free | View In iTunes |

57 | Video5-19 Apparent Weight-application of newtons laws | Find the acceleration of an elevator necessary for a passenger to have an apparent weight that differs from her actual weight | 19 9 2006 | Free | View In iTunes |

58 | Video5-13 Tethered Blocks-application of newtons laws | Find the tension in two ropes that keep two blocks from sliding down an inclined plane | 19 9 2006 | Free | View In iTunes |

59 | Video5-7 Wrecking Ball in Equilibrium-application of newtons laws | Find the tension in the cables necessary to hold a wrecking ball in equilibrium | 19 9 2006 | Free | View In iTunes |

60 | Video5-3 Hanging From a Rope-application of newtons laws | A person is hanging from a rope, what is the tension in the rope as a function of the deflection angle | 19 9 2006 | Free | View In iTunes |

61 | VideoHW 4 solutions - Highway of Perilous Death-circular motion | We look at how much a road must be banked for a car to accelerate around a turn without the aid of friction | 19 9 2006 | Free | View In iTunes |

62 | VideoMidterm 1 Solutions-fall 2006 | Solutions to Midterm 1 on kinematics | 14 9 2006 | Free | View In iTunes |

63 | Video4-28 Tow Rope-newons laws | Find the tension in a tow rope necessary to pull a skier up a ski slope. | 12 9 2006 | Free | View In iTunes |

64 | Video4-25 Pendulum on a Train-newtons laws | Find the force responsible for accelerating a pendulum bob in an accelerating train car | 12 9 2006 | Free | View In iTunes |

65 | Video4-23 Acceleration of the Earth-newtons laws | Calculate the acceleration that the Earth feels due to the reaction force of the weight of a person. | 12 9 2006 | Free | View In iTunes |

66 | Video4-22 Woman in Elevator-newtons laws | Find the reaction forces for the forces that act on a woman in an accelerating elevator | 12 9 2006 | Free | View In iTunes |

67 | Video4-9 Box on Ice-newtons laws | What is the mass of a box given its acceleration when pushed on by a given force? | 12 9 2006 | Free | View In iTunes |

68 | Video4-4 Block on a Plane-newtons laws | How hard must you pull on a rope to get a block to slide up a plane? | 12 9 2006 | Free | View In iTunes |

69 | VideoHuman Trebuchet-projectile motion | Solution to homework 3 - The Human Trebuchet | 12 9 2006 | Free | View In iTunes |

70 | Video3-21 Carnival Game-projectile motion | Determine how high a target needs to be in order to be hit. | 5 9 2006 | Free | View In iTunes |

71 | Video3-12 Jumping Off a Cliff-projectile motion | Calculate the necessary initial velocity for the cliff diver to avoid the ledge below | 5 9 2006 | Free | View In iTunes |

72 | VideoHW2 San Jose Grand Prix-1d kinematics | Using information provided about the SAn Jose Grand Prix find the acceleration and other parameters for the race cars. | 5 9 2006 | Free | View In iTunes |

73 | Video2-95 Catching the Bus-1D kinematics | Use the equations of motion in 1 dimension to figure out how fast you need to run to catch a bus that is accelerating away from a nearby bus stop | 31 8 2006 | Free | View In iTunes |

74 | Video2-45 Throwing a Water Balloon-1d kinematics | USe the equations of motion in 1D to find the parameters of motion for a water balloon thrown from the roof of a building | 31 8 2006 | Free | View In iTunes |

75 | Video2-39 Jumping Flea-1d kinematics | USe the equations of motion in 1D to analyze the trajectory of a flea in free fall after jumping | 31 8 2006 | Free | View In iTunes |

76 | Video2-33 Trip to the Moon-1d kinematics | Find the time to travel to the moon using some given values and the equations of motion in 1 dimension | 31 8 2006 | Free | View In iTunes |

77 | Video2-27 Acceleration of a Car-1D motion with constant acceleration | Use the equations of motion in 1D to find the acceleration of a car | 31 8 2006 | Free | View In iTunes |

78 | Video2-23 Automobile Airbags-1d kinematics | Use the equations of motion in 1D to analyze a car crash | 31 8 2006 | Free | View In iTunes |

79 | Video2-21 Running Antelope-1d kinematics | Use the equations of motion in 1D to find the acceleration of an antelope | 31 8 2006 | Free | View In iTunes |

80 | Video2-19 Spider Crawl-1d kinematics | Relate the parameters of motion to a graph of displacement versus time | 31 8 2006 | Free | View In iTunes |

81 | VideoHW1 The Flying Fox-vector manipulation | The method for the solution to homework 1 is presented. A written solution and the full set of answers are available in a PDF document in the handouts podcast. | 31 8 2006 | Free | View In iTunes |

82 | Video1-12 Percent Error in a Year-unit conversion | We practice unit conversion by finding the number of seconds in a year and then find the percent error in a simple estimate of this number | 22 8 2006 | Free | View In iTunes |

83 | Video1-7 Speed of the Concorde-unit conversion | We show how to convert units from miles per hour to kilometers per hour and meters per second | 22 8 2006 | Free | View In iTunes |

84 | Video1-54 Vector Cross Products-vector review | We practice taking the cross product (also called the vector product) of vectors. We use both the method of the determinate and the right hand rule. | 21 8 2006 | Free | View In iTunes |

85 | Video1-50 Vector Dot Products-vector review | We practice taking the dot product (also called the scalar product) of vectors | 21 8 2006 | Free | View In iTunes |

86 | Video1-39 Vector Addition by Components-vector review | We practice adding vectors by adding their components | 21 8 2006 | Free | View In iTunes |

87 | Video1-32 Graphical Addition of Vectors-vector review | We show how to use a ruler and protractor to estimate the sum of vectors | 21 8 2006 | Free | View In iTunes |

88 | Video1-97 The Big Dipper-vector manipulation | Problem 1.97 from the textbook - Given the location of two stars in the big dipper relative to the Earth, where would the Earth appear from the perspective of one of the stars? | 11 8 2006 | Free | View In iTunes |

89 | VideoVector Example-Vector Components | We break a vector into its x and y components, then we consider an example where the components of the vector we are interested are inclined at an angle | 11 8 2006 | Free | View In iTunes |

89 Items |

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