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Grade: 11
        A block of mass 5 kg and surface area of 2 metre square just begins to slide down an inclined plane when the angle of inclination is 30 degree keep the mass is  same the surface area of block is doubled the angle at which it start the sliding down
10 months ago

Answers : (1)

Kruthik
119 Points
							
The answer is 30o. We know force of friction is directly proportional to Normatl reaction, not the surface area. Thus, no matter what surface are you keep, the force of friction will not change, until and unless you change mg, that is the normal reaction itself. Hope this helped you.
10 months ago
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