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The coefficients of static and dynamic f...

The coefficients of static and dynamic friction are 0.7 and 0.4. The minimum force required to create motion is applied on a body and if it is further continued, the acceleration attained by the body in `ms^(-2)` is `(g = 10m//s^(-2))`

A

7

B

4

C

3

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
C
`F_("net")=ma, F_(R)=f_(s)-f_(k), a=(mu_(s)-mu_(K))g`
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Knowledge Check

  • A horizontal force just sufficient to move a body of mass 4 kg lying on a rought horizontal surface is applied on it .The coefficient of static and kinetic friction the body and the surface are 0.8 and 0.6 respectively If the force contines to act even after the block has started moving the acceleration of the block in ms^(-2) is (g = 10 ms^(-2))

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