Question

plz answer fast I will mark it as brainliest useless will be reported

A block of mass 5 kg and surface area 2 m sq just begins to slide down on an inclined plane when the angle of inclination is 30 degree . keeping mass same , the surface area of the block is doubled . the angle at which it starts sliding down is

1) 30
2) 60
3 ) 15
4 ) none

Answer 1

Answer:

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

Answer 2

hiii mate here is your answer

1)30