Solved: A 160-lb man carries a 25-lb can of paint up a helical staircase that encircles
Chapter 16, Problem 45(choose chapter or problem)
A 160-lb man carries a 25-lb can of paint up a helical staircase that encircles a silo with a radius of 20 ft. If the silo is 90 ft high and the man makes exactly three complete revolutions climbing to the top, how much work is done by the man against gravity?
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