Question

A body of mass 1.6 kg accelerates down a smooth
inclined plane making an angle of 30° with the
horizontal. What is the minimum force required
to make it move upwards with the same
acceleration?
(1) 4N
(2) 8N
(3) 12N
(4) 16N
with complete solution​

Answer 1

Answer:

Explanation:

Ok so

when the body is inclined 30 degree  the force acting on it can be resolved into 2 components ie. mgsinФ and mgcosФ.

the mgcosФ will be cancelled by g

so only mgsinФ will remain

F= mgsin30 = 1.6*10*1/2 = 8N

so minimum force required is 8 N

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