To find: The work done by the force in moving an object 4ft along x-axis in the positive direction if the unit of force is the pound.
Answer to Problem 45E
The work done by the force in moving an object is 16 ft-lb.
Explanation of Solution
Given:
The given force
Formula used: Work
The work done in moving an object along a
Calculation:
The object moves 4ft along x-axis and there is no change in y-axis. So, the x-component is 4ft and the y-component is 0.
The displacement vector is,
Substitute
Thus, the work done by the force in moving an object is 16 ft-lb.
Chapter 9 Solutions
Precalculus: Mathematics for Calculus - 6th Edition
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