   Chapter 11.3, Problem 64E

Chapter
Section
Textbook Problem

# WorkA sled is pulled by exerting a force of 100 newtons on a rope that make a 25° angle with the horizontal. Find the work done in pulling the sled 40 meters.

To determine

To calculate: The work done for pulling the sled 40 meters when sled pulled by an exerting force of 100 Newtons on a rope which makes an angle of 25° with the horizontal.

Explanation

Given:

A sled pulled with a force of 100 N on a rope which makes an angle of 25° with the horizontal and pulled the sled 40 meters.

Formula used:

Work done W=F·s, where F is the force applied on a article to move s meters.

Calculation:

Since, the force applied on the sled makes an angle 25° with the horizontal. Thus, the force vector F=100[cos(25°)i]

The displacement vector can be written as;

s=

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