Review View Tell me what you want to do Unless you need to edit, it\'s safer to

Question

Review View Tell me what you want to do Unless you need to edit, it's safer to stay in Protected View. Enable Editing Name: Phy 1010-Chapter 5 Activity: Swinging Bowling Ball A bowling ball is suspended from the ceiling of a lecture hall by a strong cord. The ball is drawn away from its equilibrium position and released from rest at the tip of the demonstrator's nose, as shown in the figure below. (a) If the demonstrator remains stationary, explain why the ball does not strike her on its return swing. (b) Would this demonstration be safe if the ball were given a push from its starting position at her nose? Why, or why not?

Explanation / Answer

a] If the demonstrator remains stationary, the ball will at the very best nearly touch her since the amplitude given by the demonstrator will either remain constant or will decay due to damping forces but will never increase.

b] If the demonstrator gives a slight push to the ball at the starting position, this push will essentially give the ball additional kinetic energy which will manifest as a greater amplitude than the original amplitude which implies that the demonstrator is doomed to get hurt after one time cycle of oscillation.

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