Question

Body sliding down an inclined plane having an angle theta if the coefficient of friction is u the acceleration of the body down the incline plane is

Answer 1

The scenario is as shown below:

where fg=m.a is the force due to gravity. Now as θ increases fg_incl increases where fg_incl is the component of force along the inclined plane and it is given by

fg_incl=fg∗sinθ

Now for θ=60∘

fg_incl=fg∗sin60∘=0.866∗fg