# A ball is attached to a horizontal cord of length whose

## Problem 77GP Chapter 6

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition

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Problem 77GP

A ball is attached to a horizontal cord of length whose other end is fixed, Fig. 6-49. (a) If the ball is released, what will be its speed at the lowest point of its path? (i>)A peg is located a distance h directly below the point of attachment of the cord. If h = 0.801, what will be the speed of the ball when it reaches the top of its circular path about the peg?

Step-by-Step Solution:

Step-by-step solution

Step 1 of 2 </p>

a)

The potential energy of the ball at its initial position = mgL.

Its speed at the lowest point of its path is given from the principle of conservation

of energy as:

We put v on the left side of the equation and everything else on the right side and we take square root of both sides and we get:

Step 2 of 2

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