0.25-kg ball is attached to the end of a 0.50-m string and moved in a horizontal circle at 2 m/s. (a) What net force is needed to keep the ball in its circular path? (b) Supposed you make the string half as long (0.25 m), what force is now needed?

0.25-kg ball is attached to the end of a 0.50-m string and moved in a horizontal circle at 2 m/s. (a) What net force is needed to keep the ball in its circular path? (b) Supposed you make the string half as long (0.25 m), what force is now needed?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 35P

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Concept explainers

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.

Question

A 0.25-kg ball is attached to the end of a 0.50-m string and moved in a horizontal circle at 2 m/s.

(a) What net force is needed to keep the ball in its circular path?

(b) Supposed you make the string half as long (0.25 m), what force is now needed?

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