A runner is being used in the figure shown. How much effort is the boy who’s lifting the 50-pound anvil using? Disregard friction, wind resistance, and the weight of the pulley and the rope.
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Answer:
50-pound effort
Explanation
Stationary pulleys give no mechanical advantage, so effort equals the weight of the crate, or 50 pounds.
Explanation
Stationary pulleys give no mechanical advantage, so effort equals the weight of the crate, or 50 pounds.