. A block of mass 1 kg is kept over another block of mass 2 kg and whole system is kept on a smooth X-Z plane.

A block of mass 1 kg is kept over another block of mass 2 kg and whole system is kept on a smooth X-Z plane. Block of mass 1 kg is being moved continuously with velocity 1 m/s towards positive X-axis and lower block is moved continuously with velocity 1 m/s towards positive Z-axis as shown in figure. If coefficient of friction between two blocks is 0.1, the rate at which heat is generated will be  (g = 10 m/s²)