Sand drops vertically from a stationary hopper at a constant rate of 100 gram per second onto a horizontal conveyor belt moving at a constant velocity, ~v, of 10 cm/sec. 1. What force (magnitude and direction relative to the velocity) is required to keep the belt moving at a constant speed of 10 cm/sec? 2. How much work is done by this force in 1.0 second? 3. What is the change in kinetic energy of the conveyor belt in 1.0 second due to the additional sand on it? 4. Should the answers to parts 2. and 3. be the same? Explain.
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Home » Physics » Sand drops vertically from a stationary hopper at a constant rate of 100 gram per second onto a horizontal conveyor belt moving at a constant velocity, ~v, of 10 cm/sec. 1.