A horizontal force of 300 N is exerted on a 1.5-kgball as it rotates (at arm's length) uniformly in a horizontal circle of radius 0.90 m. Calculate the speed of the ball. Express your answer to two significant figures and include the appropriate units. V= ____________ _____________

A horizontal force of 300 N is exerted on a 1.5-kgball as it rotates (at arm's length) uniformly in a horizontal circle of radius 0.90 m. Calculate the speed of the ball. Express your answer to two significant figures and include the appropriate units. V= _

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And The Law Of Gravity

Section: Chapter Questions

Problem 11WUE: What is the gravitational acceleration close to the surface of a planet with a mass of 2ME and...

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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

16.) A horizontal force of 300 N is exerted on a 1.5-kgball as it rotates (at arm's length) uniformly in a horizontal circle of radius 0.90 m.

Calculate the speed of the ball.

Express your answer to two significant figures and include the appropriate units.

V= ____________ _____________

17.) A 75.0 kg firefighter climbs a flight of stairs 30.0 mhigh.

How much work is required?

Express your answer to three significant figures and include the appropriate units.

W= ______________ _____________

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