Laws of MotionHard

Question

The ratio of the weight of a man in a stationary lift & when it is moving downward with uniform acceleration ′a′ is 3 : 2 . The value of ′a′ is : (g = acceleration. due to gravity)

Options

A.(3/2) g
B.g
C.(2/3) g
D.g/3

Solution


mg − n = ma         [Newton′s II law for man]
⇒    N = m (g − a)
Weight of man in moving lift is equal to N.
⇒            ⇒    a = g/3

Create a free account to view solution

View Solution Free
Topic: Laws of Motion·Practice all Laws of Motion questions

More Laws of Motion Questions

There are three Newton′s laws of motion namely I, II and III ; we can derive : -...An inclined plane makes an angles 30o with the horizontal. A groove OA = 5m cut in the plane makes an angle with 30o wit...A block is kept on a frictionless inclined surface with angle of inclination α. The incline is given an acceleratio...The surface are frictionless, the ratio of T1 and T2 is :-...If you want to pile up sand onto a circular area of radius R. The greatest height of the sand pile that can be erected w...