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Question

How much force is required to push a 100 N wooden block up a friction less plane that is inclined at an angle of 30o with the horizontal so that it has an acceleration along the plane of 2.5m/s2?

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Solution

Fmgsinθ=ma

And , weight =mg=100N

m=100g=10kg

Hence, F=100×12+10×2.5

F=75N

1044851_1066599_ans_3f775909b3504c26bb614274dd33c260.png

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