Question

A sphere of mass m is kept between two inclined walls, as shown in the figure. If the coefficient of
friction between each wall and the sphere is zero, then the ratio of normal reaction (N,N,) offered
by the walls 1 and 2 on the sphere will be
[3]
(A)
tane
(B)
tan 20
(C)
2 cose
(D)
cos 20
​

Answer 1

A sphere of mass m is kept between two inclined walls, as shown in the figure. If the coefficient of

friction between each wall and the sphere is zero, then the ratio of normal reaction (N,N,) offered

by the walls 1 and 2 on the sphere will

Explanation:

Cos 20