1. A 15 kg box frame is sliding down a 20° incline plane with a 10 kg steel sphere suspended inside the box as shown in Fig. 1. Consider the coefficient of kinetic friction between the box and the incline is 0.15. 45 De B 20" Fig. 1 (a) Draw a free body diagram of the forces on the box and on the sphere?
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1.97, 130 55
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