Q. 45

Expert-verifiedFound in: Page 229

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

Susan’s kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled above the floor. The tension is a constant N and the coefficient of friction is . Use work and energy to find Paul’s speed after being pulled m.

Paul's speed after being pulled m is m/s

Mass kg

Tension N

the coefficient of friction

We use second Newton's law for direction perpendicular to motion, or direction

Friction is defined as

From the work-kinetic theorem, we can calculate Paul's speed

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