Question

The coefficient of static friction between contact surfaces of two bodies is $1$. The contact surfaces of one body support the other till the inclination is less than

• A. ${30}^0$
• B. ${45}^0$
• C. ${60}^0$
• D. ${90}^0$

Answer 1

Answer: (B)

${45}^0$

For given conditions:

$tan\theta =\mu =1\Rightarrow \theta ={45}^o$