PB1.Q6.iii

What is the potential energy of the pendulum bob at position B? (Assume g = 10 m/s²)

• 1 J

• 10 J

• 100 J

• 1000 J

At which point in the pendulum's swing is the potential energy at its maximum?

• At the mean position (A)

• At the extreme position (B)

• At the midpoint between A and B

• The potential energy remains constant.

If air resistance is negligible, what is the total mechanical energy of the pendulum at point C (an intermediate point between A and B) compared to its potential energy at point B?

• Less than the potential energy at B

• Equal to the potential energy at B

• Greater than the potential energy at B

• Cannot be determined without knowing the height of C.

What is the kinetic energy of the pendulum bob at the mean position A when it is released from the extreme position B, assuming no energy loss?

• 0 J

• Equal to the potential energy at B.

• Greater than the potential energy at B.

• Cannot be determined.

What is the speed of the bob at position A when released from B? (Assume g = 10 m/s² and no energy loss)

• 5 m/s

• 10 m/s

• 50 m/s

• 100 m/s

As the pendulum bob swings from its extreme position (B) to its mean position (A), what energy transformation occurs?

• Kinetic energy is converted to potential energy.

• Potential energy is converted to kinetic energy.

• Kinetic energy is converted to heat energy.

• Potential energy is converted to heat energy.

Which of the following best defines mechanical energy?

• The energy possessed by a body due to its position or configuration.

• The energy possessed by a body due to its motion.

• The sum of the potential and kinetic energies of a body.

• The energy possessed by a body due to its temperature.

At which position in its swing does the pendulum bob have maximum kinetic energy?

• At the extreme positions

• At the mean position

• Mid-point between mean and extreme positions

• Kinetic energy is constant throughout the swing

If the mass of the pendulum bob is doubled, how will its maximum speed at the mean position be affected (assuming the same initial displacement)?

• It will be doubled

• It will be halved

• It will remain the same

• It will become four times