A vehicle is moving on a road with an acceleration a = 20 m/ s 2  as shown in figure. The frictional coefficient between the block of mass m and the vehicle so that the block does not fall downwards is 

Q. A vehicle is moving on a road with an acceleration a = 20 m/
s 2  as shown in figure. The frictional coefficient between the block of mass m and the vehicle so that the block does not fall downwards is 

 Dear Student
Kindly find the answers of your asked query.

For mass m not to fall, net force on the mass m should be zero.here friction force will be equal to the weight of the massfr=mgand force applied by the vehicle is equalto the normal reaction to mass mF=RtherefoeR=maand we kmowfr=μRwhere μ is the coefficient of frictionfr=mgμR=mgμma=mgμ=ga=1020=0.5

Hope this information will clear your doubt about friction.
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