Solve the following numerical 1. A wooden block weighing 600 N is just pull up the plane having an inclination of 35◦ with the horizontal by a pull parallel to the plane. If the coefficient of friction is 0.25. Find the pull.
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Explanation:
Mass of the block m=8 kg
Acceleration of the block a=0.4m/s
2
Since the block is sliding down the plane, so friction force acts backwards as shown.
Equation of motion along the inclined plane :
ma=mgsin30
o
−f
We get f=mgsin30
o
−ma
∴ f=(8)(10)(0.5)−(8)(0.4)
⟹f=36.8 N
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