Mechanics> rotational motion...

A solid sphere of mass m is placed on a rough incline plane. The coeff of friction is insufficient to start pure rolling. The sphere slides length L from rest and its KE becomes K. Find work done by friction.

RAJIV SINGH , 14 Years ago

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2 Answers

KARAN ACHARYA

energy conservation

mgLsintheta = K + work done by friction [theta is the angle of inclination ]

work done by friction = mgLsintheta - K

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Last Activity: 14 Years ago

Chetan Mandayam Nayakar

work done by gravity=mgLsin(theta), work done by friction is obviously negative, but let it have a magnitude 'Wf',

mgLsin(theta)-Wf=K,lWfl=mgLsin(theta)-K,Wf=K-mgLsinθ

Last Activity: 14 Years ago

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Mechanics> rotational motion...

A solid sphere of mass m is placed on a rough incline plane. The coeff of friction is insufficient to start pure rolling. The sphere slides length L from rest and its KE becomes K. Find work done by friction.

RAJIV SINGH , 14 Years ago

KARAN ACHARYA

Chetan Mandayam Nayakar

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