A block of mass m is placed on another block of mass M which itself is lying on a…
Physics · JEE Advanced · NTA Exams — Laws of Motion
A block of mass m is placed on another block of mass M which itself is lying on a horizontal surface. The coefficient of friction between two blocks is \(\mu_{1}\) and that between the block of mass M and horizontal surface is \(H_{2}\). What maximum horizontal force can be applied to the lower block, so that the two blocks move without separation?
- \(\left(\mu_{1}-\mu_{2}\right)(m+M) g\)
- \(\left(\mu_{1}-\mu_{2}\right)(m-M) g\)
- \(\left(\mu_{1}+\mu_{2}\right)(m-M) g\)
- \(\left(\mu_{1}+\mu_{2}\right)(m+M) g\)
Answer
(D) ( _ 1 + _ 2 )(m+M) g
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