(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A heavy ball swings on a string in a circular

arc of radius 2 m.

The two highest points of the ball’s trajec-

tory are Q and Q′; at these points the string is

±28◦ from the vertical. Point P is the lowest

point of the ball’s trajectory where the string

hangs vertically down.

The acceleration of gravity is 9.8 m/s2.

What is the magnitude of the ball’s acceler-

ation at the point Q? Answer in units of

m/s2.

3. The attempt at a solution

Wouldn't the acceleration at Q be 0 because there is no velocity at that point.

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# Homework Help: Ball Pendulum Problem

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