Question

multiple-choice question
if professor lewin gives a push to the pendulum ball as he releases it, what will happen to
the glass?

the glass will break if he gives it an initial push because the ball will swing higher

the glass it will stay intact because the ball will not go higher

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Explanation:

An initial push adds kinetic energy to the pendulum ball. This extra energy increases the maximum height the ball reaches during its swing. If the glass is positioned at a height that the ball wouldn’t reach without the push, the higher swing from the push will cause the ball to hit the glass, breaking it.

Answer:

the glass will break if he gives it an initial push because the ball will swing higher