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Periodic Motions

Periodic Motions. Student Survey. As the length of a simple pendulum increases, how does this affect the amount of time (or period) per swing?. Time decreases Time increases Time remains constant. For Hooke’s Law, the spring force is proportional to …. Length Time Energy momentum.

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Periodic Motions

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  1. Periodic Motions Student Survey

  2. As the length of a simple pendulum increases, how does this affect the amount of time (or period) per swing? • Time decreases • Time increases • Time remains constant

  3. For Hooke’s Law, the spring force is proportional to … • Length • Time • Energy • momentum

  4. Mechanical work is based upon the product of … • F t • F x • Mv • ma

  5. Kinetic energy describes… • Energy of position • Elastic energy • Energy of motion • Change in momentum

  6. When the speed of a car is tripled (10mph to 30 mph) by what factor does the kinetic energy increase? • 2 • 3 • 6 • 9

  7. The momentum of an object is based upon the product of … • Ma • Ft • Fx • Mv

  8. What are the base units of the watt? • Kg m/s • Kg mm/s • Kg m/ss • Kg mm/sss • Kg mm/ss

  9. Two objects of equal mass collide elastically. The first object moves at a constant speed (1 m/s), the second object is initially at rest. After the collision, what is the speed of each object? • 0 , 1 • 1, 0 • .5, .5 • 2, 0 • 0 , 2

  10. Two objects collide inelastically. The first object moves at a constant speed (1 m/s) and strikes the second object at rest. Find the final combined speed. • 2 • 1 • .5 • .25

  11. In which of the following events is kinetic energy conserved? • An elastic collision • A perfect elastic collision • An inelastic collision • An explosion

  12. Which of the following expression could be used to find a person’s average body power? • Mgh • Mgh/t • ½ mvv/t • ½ mv • μmgh/t

  13. How does an increase in the mass of the pendulum affect the pendulum’s time? • Increases time • Decreases time • Has no affect on the time

  14. As the pendulum is released from higher elevations (due to increasing angle from the vertical), how does this affect the time? • Time increases • Time decreases • Time stays the same no matter where it is released

  15. As a mass suspended from a spring is increased, how does this affect the time per vibration? • Time increases • Time decreases • Time remains constant

  16. As a mass on a spring is released from increasing positions from equilibrium, how does this affect the time for each vibration? 1.Time increases 2. Time decreases 3. Time remains constant

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