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Chapter 8: Q.43 (page 200)

A 4.4-cm-diameter, 24 g plastic ball is attached to a 1.2-m-long string and swung in a vertical circle. The ball鈥檚 speed is 6.1 m/s at the point where it is moving straight up. What is the magnitude of the net force on the ball? Air resistance is not negligible.

Short Answer

Expert verified

Force is = 0.7308 N

Step by step solution

01

Given Information

Ball diameter = 4.4-cm-diameter,

mass =24 g

String length = 1.2-m

v= 6.1 m/s

02

Explanation

T=mv2rT=0.024脳(6.1)21.222T=0.7308N

Understand the problem with the diagram below


So the radius will be = 1.2m+2.2 cm = 1.222m

Centripetal force is given by F=mv2r

This force is equal to tension on the string

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