Q.59

Expert-verifiedFound in: Page 230

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

A horizontal spring with spring constant is compressed by and then used to launch a box across the floor. The coefficient of kinetic friction between the box and the floor is . What is the box’s launch speed?

The launch speed of the box is .

The work energy theorem is

Considering the following diagram,

The force of kinetic friction is

The net force on the mass is calculated as:

Therefore, the total work done on the box during the launch is :

Now apply the work energy theorem,

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