Suppose that in an experiment such as you have just completed, the speed of the

Question

Suppose that in an experiment such as you have just completed, the speed of the ball just before it hit the pendulum cage, vi, was very accurately measured, the speed of the ball and pendulum cage, Vf, just after the collision was very accurately measured, and the masses of the ball, m, and pendulum bob, M, were accurately known. Which of the following could be reasons why the experiment might show that the initial momentum, mvi, was slightly different from the final momentum, (m + M)Vf? Select all that apply.

The mass of the rod holding the pendulum cage, while small, is not really zero.

There was some friction in the hinge on which the pendulum swung.

The air resistance was ignored during the ball's flight toward the pendulum cage.

Some energy is lost to heat and sound during the collision.

Explanation / Answer

. a, b and d apply.
"c" can be ignored since we measured the velocity at impact.

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.