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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A block of mass m is attached with a massless spring of force constant k. The block over a rough inclined surface for which the coefficient of friction is 0.5 M is released from rest when the spring was unstretched.

A block of mass m is attached with a massless spring of force constant k. The block over a rough inclined surface for which the coefficient of friction is 0.5 M is released from rest when the spring was unstretched.

A block of mass 4 kg is pressed against the wall by a force of 80 N as shown in Fig. 7.285. Determine the value of friction force and block's acceleration .