Determine the force of friction exerted by belt on sand

Reference no: EM13665555

Sand from a stationary hopper falls on a moving conveyor belt at the rate of 5.70 kg/s. The convey or belt is supported by frictionless rollers and moves at a constant speed of v = 0.690 m/s under the action of a constant horizontal external force F_extsupplied by the motor that drives the belt.

(a) Determine the sand rate of change of momentum in the horizontal direction.

(b) Determine the force of friction exerted by belt on sand.

(d) Determine the work done by F_ext in 1 second.

J

(e) Determine the kinetic energy acquired by the falling sand each second due to the change in its horizontal motion.

J

(f) Describe why are the answers to parts (d) and (e) different?

Reference no: EM13665555

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