Question

The force required to just move a body up an inclined plane is double the force required to prevent the body from sliding friction find the coefficient of friction

Answer 1

solution:

[tex]force required to just move a body up on liclined plane\\ f_{1}=ms(sin\theta +\mu cos\theta)\\ force required to just prevent the body sliding down the liclined plane\\ f_{2}=2f_{2}\\ mg(sin\theta+\mu cos\theta)=2mg(sin\theta-\mu cos\theta)\\ sin\theta+\mu cos\theta=2(sin\theta-\mu cos\theta)\\ 3\mu cos\theta=sin\theta\\ tan\theta=3\mu =3\times \frac{1}{\sqrt{3}}\\ =\sqrt{3}\\ \theta=60°[/tex]

Answer 2

Answer:

according to the question