#2. A car on a level road turns a quarter circle counter-clockwise. Static friction force causes the centripetal acceleration. Work done by static friction is A) positive B) negative C) zero

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Chapter1: Units, Trigonometry. And Vectors
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#2. A car on a level road turns a quarter circle counter-clockwise. Static friction force
causes the centripetal acceleration. Work done by static friction is
A) positive
B) negative
C) zero
Transcribed Image Text:#2. A car on a level road turns a quarter circle counter-clockwise. Static friction force causes the centripetal acceleration. Work done by static friction is A) positive B) negative C) zero
Expert Solution
Step 1

The expression for the work done by the static friction is,

W=fscosθ

Here, θ is the angle between the frictional force f and the displacement s.

 

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