The 50-lb block rests on the rough surface for which the coefficient of kinetic friction is 14k = 0.2. A force F = (40+ s2) lb, where s is in ft, acts on the block in the direction shown. The spring is originally unstretched (s = 0) and the block is at rest. (Figure 1) ▾ Part A Determine the power developed by the force the instant the block has moved s = 1.5 ft. Express your answer in units of horsepower to three significant figures. Figure 30° k = 20 lb/ft www <1 of 1 > 1 ΑΣΦ 11 vec W = Submit Request Answer Provide Feedback ? hp

The 50-lb block rests on the rough surface for which the coefficient of kinetic friction is 14k = 0.2. A force F = (40+ s2) lb, where s is in ft, acts on the block in the direction shown. The spring is originally unstretched (s = 0) and the block is at rest. (Figure 1) ▾ Part A Determine the power developed by the force the instant the block has moved s = 1.5 ft. Express your answer in units of horsepower to three significant figures. Figure 30° k = 20 lb/ft www <1 of 1 > 1 ΑΣΦ 11 vec W = Submit Request Answer Provide Feedback ? hp

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.79P: The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a)...

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