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Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 6 - Problem 77gp
Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 6 - Problem 77gp

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

ISBN: 9780130606204 3

## Solution for 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.  ).  If the ball is released, what will be its speed at the lowest point of its path? (b) A peg is located a distance  directly below the point of attachment of the cord. If  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

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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