Question

A rocket is fired vertically from the earth with an acceleration of 2g, where g is the gravitational acceleration. On an inclined plane inside the rocket, making an angle with the horizontal, a point object of mass m is kept. The minimum coefficient of friction min between the mass and the inclined surface such that the mass does not move is:

Answer 1

μ m =tan(θ)

Explanation:

N=3mgcos(θ)

Fr =μm N

∴Fr =3μm mgcos(θ)

3mgsin(θ)=3μm mgcos(θ)

μm=tan(θ)