What is the difference in work needed to push a 100 kg crate (at constant speed)a distance of 2 m along an inclined plane that is at an angle of 20 degrees with the horizontal,if the coefficient of kinetic friction was equal to 0.20 or zero?

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Quizplus · Accepted Answer

The work done against friction is the difference. With friction, work = friction force * distance = (0.20 * 100 * 9.8 * cos(20)) * 2. Without friction, work is zero. The difference is approximately 370 N.

What Is the Difference in Work Needed to Push a 100