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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A block of mass m1 moves with an acceleration a12 relative to a trolley as shown in figure. The block is being observed by two observers (2) and (3). The observer (2) is at rest with respect to trolley which is moving with acceleration a2 while the observer(3) is moving on ground with acceleration a_3. What is the work done by the pseudo force as observed by the observers (2) and (3) on the block during time t? Assume zero intial velocities of the bodies and observers.

A block of mass m1 moves with an acceleration a12 relative to a trolley as shown in figure. The block is being observed by two observers (2) and (3). The observer (2) is at rest with respect to trolley which is moving with acceleration a2 while the observer(3) is moving on ground with acceleration a_3. What is the work done by the pseudo force as observed by the observers (2) and (3) on the block during time t? Assume zero intial velocities of the bodies and observers.

An inclined plane is moving up with constant velocity v. A block kept on incline is at rest. Calculate the work done by gravity friction force