PURPOSE: To demonstrate mechanical power.
DESCRIPTION: A one-half kilogram mass provides a force of about 5 Newtons hanging over the pulley. Under the 5 Newton force the block moves at a constant speed. The distance and time can be measured and the power calculated.
SUGGESTIONS: Clean table top for best results.
REFERENCES: (PIRA unavailable.)
EQUIPMENT: Felt-surface aluminum block, rope, pulley, half-kilogram mass, scale, timer.
SETUP TIME: 5 min.
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