Question

its on work and engery

a.) How much work is done lifting a 150 kg box by 5 meters?

b.) How much work is done lifting the box by pulling 30 meters on a rope attached to a pulley system using 245.25 N?

c.) How much work is done turning a crank with radius 0.5 meters attached by a rope to the box through 50 full turns using 294.3 N?

d.) How much work is done by the box in part (a) falling?

e.) What does this tell you about the meaning of the "Work-Energy" Theorem's statement that work done must equal the amount of energy changed?

Answer 1

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