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Question

A block of mass M is placed on a rough inclined plane having angle of inclination 45o. The friction is 0.5. What s the acceleration of the block down the inclined plane ?Acceleration due to gravity is g.

A
0.20 g
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B
0.25 g
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C
0.30 g
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D
0.35 g
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Solution

The correct option is D 0.35 g

Consider the accelerations for as shown in the diagram above:

Component of gravitation force - Friction force= Net Force

MgsinθμMgcosθ=Ma

a= gsin45oμgcos45o

a=g120.5g12

a=0.35g


985649_1076760_ans_0f15aa26f95343af940a2e38fe10793b.png

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