A system comprising two blocks is shown, one of which is on an inclined plane. T

Question

A system comprising two blocks is shown, one of which is on an inclined plane. The pulley is of negligible mass and is frictionless. The system starts from rest at position 1 and accelerates. Measurements taken when the blocks reach position 2 indicate that (1) the kinetic energy of block A has changed by 330 J, (2) the potential energy of block A has changed by 588 J, (3) the kinetic energy of block B has changed by 110 J, and (4) the potential energy of block B has changed by 98 J. The amount of mechanical energy that has been converted to heat because of friction is

Explanation / Answer

12 J

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