A 1000 kg elephant is to be lifted 10m above the ground. a. How much workis required to slide the elephant up a frictionless ramp to the same height? b. If the ramp is 150m long, how much force is required? c. What work and force is required to lift the elephant if you had a four pulley system?

A 1000 kg elephant is to be lifted 10m above the ground. a. How much workis required to slide the elephant up a frictionless ramp to the same height? b. If the ramp is 150m long, how much force is required? c. What work and force is required to lift the elephant if you had a four pulley system?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter10: Work, Energy And Machines

Section10.1: Work And Energy

Problem 20SSC

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Concept explainers

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.

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A 1000 kg elephant is to be lifted 10m above the ground.

a. How much workis required to slide the elephant up a frictionless ramp to the same height?

b. If the ramp is 150m long, how much force is required?

c. What work and force is required to lift the elephant if you had a four pulley system?

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