Question

An object of mass m lies on floor of a lift , when lift moves with a constant speed 'v' downwards, then the value of reaction force
(a) R = 0
(b) R= mg
(c) R= mv^2/r
d) R = m(g + v/f)



​

Answer 1

Answer:

d is the correct option to this question and it is the correct Answer

Answer 2

Explanation:

OPTION (a)

Since we have given that V=(const) that mean

acceleration =0

Applied Newton law's of motion

N−mg=0

N=mg

Now, since no force acts in horizontal direction, hence

R=0

∴ OPTION (A) is correct option.