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If it takes 45 $\mathrm{N}$ of force to lift a box $3.8 \mathrm{m},$ how much work is done to the box?

171 $\mathrm{J}$

Chemistry 102

Chemistry 101

Chapter 20

Understanding Energy

Section 4

Work

Thermodynamics

Thermochemistry

Drexel University

University of Kentucky

Brown University

Lectures

03:07

A liquid is a nearly incom…

04:38

A liquid is a state of mat…

00:35

A force of 60 pounds on a …

00:41

A rope is used to pull a m…

01:49

You push a 67 -kg box acro…

Two people lift a heavy bo…

01:25

A force of 80 pounds on a …

03:33

How much work is done when…

00:44

Calculate the work done wh…

00:37

01:15

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00:40

Sled Diego pulls a 4.5 -kg…

This next question, similar to the previous question, asks you to calculate the amount of work that is being done by a particular process. The amount of work that is being done by the particular process can be calculated using one of two equations that are available in the textbook. One equation we used earlier that was work is equal to pressure multiplied by a change in volume. However, we don't have an expanding gas. In this problem, we simply no a force that is being applied over a distance. So the more appropriate equation is work is going to be equal to this force in Newtons, multiplied by the distance in meters. The force that is being applied is 45 Newtons, and the distance over which this force is being applied is 3.8 m. So when multiplied together we get 171 Newton meters, which is the same thing as 171 jewels. One Newton meter is a Jule

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