A 150-lb man carries a 20-lb can of paint up a helical staircase that encircles a silo with radius 30 ft. If the silo is 40 ft high and the man makes exactly two complete revolutions, how much work is done by the man against gravity in climbing to the top?

Answer rating: 100% (QA)

Given Mass of man m 150 lb Mass of the paint box m ... View the full answer