Question

A 320-lb gorilla climbs a tree to a height of 23 ft. find the work done if the gorilla reaches that height in the following times. (a) 10 seconds

W = ___ ft-ib

Answer 1

7360 ft·lb

Explanation:

You want the work done by a 320-lb gorilla climbing to a height of 23 feet.

Work

Work is the product of force and distance:

W = (weight)·(height) = (320 lb)(23 ft) = 7360 ft·lb

The gorilla does 7360 ft·lb of work.

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Additional comment

Time comes into play when you want the power involved. If the climbing is done in 10 seconds, the power required is about 1.34 horsepower. (1 hp = 550 ft·lb/s)

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