Seven

A simple pendulum and a mass-spring are both oscillating with a period of 1 sec. If both systems are taken to the moon (acceleration of gravity roughly 1/6 that of Earth), how will the period of each system change?

• Pendulum Period: Increases | Mass-Spring Period: Increases

• Pendulum Period: Increases | Mass-Spring Period: No change

• Pendulum Period: No change | Mass-Spring Period: Increases

• Pendulum Period: No change | Mass-Spring Period: No change

Where is the kinetic energy of the block zero?

• x = -0.3 m

• x = 0 m

• x = +0.3 m

• x = -0.3 m, and x = +0.3 m

Which of the following correctly describes the force and acceleration of the block at x = 0.3 m?

• Acceleration = 30 m/s² | Net Force Direction: Positive

• Acceleration = 30 m/s² | Net Force Direction: Negative

• Acceleration = 0 m/s² | Net Force Direction: Positive

• Acceleration = 0 m/s² | Net Force Direction: Negative

When students collect data about the period of the pendulum, which of the following claims is true?

• Experiment 1 = Experiment 2

• Experiment 1 = Experiment 3

• Experiment 2 = Experiment 3

• Each experiment has different results

A horizontal mass-spring system with mass M is connected to a wall and is oscillating with zero friction. Then the exact same experiment is run with a new mass equal to 2M. How do the period and maximum kinetic energy of the 2M compare to those of the M oscillation?

• Period: Larger | Maximum KE: Larger

• Period: Smaller | Maximum KE: Same

• Period: Larger | Maximum KE: Same

• Period: Smaller | Maximum KE: Larger

A group of students must study the oscillatory motion of a pendulum. One end of a light string is attached to the ceiling, and the other end of the string is attached to a mass hanger. The students want to determine how the length of the pendulum affects the period. Which of the following procedures should they use?

• Vary vertical height of release

• Vary string length

• Vary vertical height and string length

• Vary string length and number of disks attached

A block on a horizontal surface is attached to a horizontal spring of negligible mass. The figure shows a graph of the velocity of the block as a function of time. At which of the following times does the block-spring system have maximum spring potential energy?

• 1.5 seconds

• 2.0 seconds

• 3.5 seconds

• 4.25 seconds

A simple pendulum consisting of a small object of mass m attached to a string of length L has a period of 5 sec. Which other length of pendulum with the same mass m will have the same period?

• L/2

• 2L

• 4L

• No other length