Question

The coefficient of kinetic friction between a 20-kg box and the floor is 0.40. A pulling force is directed 37° above the horizontal. How much work does the pulling force do on the box in pulling it 8.0 m across the floor at a constant speed? What if the force pushes rather than pulls on the box and is directed 37° below?

Name: the coefficient of kinetic friction between a 20 kg box and the floor is 040 a pulling force is directed 37o above the horizontal how much work does the pulling force do on the box in pullin 57848
Uploaded: 2022-11-18T11:30:33-08:00
Duration: 6 min 26 s
Channel: Sri K
Description: the coefficient of kinetic friction between a 20 kg box and the floor is 040 a pulling force is directed 37o above the horizontal how much work does the pulling force do on the box in pullin 57848

          The coefficient of kinetic friction between a 20-kg box and the floor is 0.40. A pulling force is directed 37° above the horizontal. How much work does the pulling force do on the box in pulling it 8.0 m across the floor at a constant speed? What if the force pushes rather than pulls on the box and is directed 37° below?

Added by Jennifer M.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Sri K

11/18/2022

Step 1

Given: Mass of the box, m = 20 kg Acceleration due to gravity, g = 9.8 m/s^2 Angle above the horizontal, θ = 37 degrees Calculate the normal force (N) acting on the box: N = mg - f sin(θ) N = (20 kg)(9.8 m/s^2) - f sin(37 degrees) N = 196 N - f(0.6) Show more…

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The coefficient of kinetic friction between a 20-kg box and the floor is 0.40. A pulling force is directed 37° above the horizontal. How much work does the pulling force do on the box in pulling it 8.0 m across the floor at a constant speed? What if the force pushes rather than pulls on the box and is directed 37° below?