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You are lowering two boxes, one on top of the other, down the ramp shown in the figure (Figure 1) by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 15.0 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.499, and the coefficient of static friction between the two boxes is 0.774. Figure 1 of 1 < > Part A What force do you need to exert to accomplish this? WD ΑΣΦΑ T= Submit My Answers Give Up f= Submit Part B What is the magnitude of the friction force on the upper box? | ΑΣΦ | ? My Answers Give Up ? N N

You are lowering two boxes, one on top of the other, down the ramp shown in the figure (Figure 1) by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 15.0 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.499, and the coefficient of static friction between the two boxes is 0.774. Figure 1 of 1 < > Part A What force do you need to exert to accomplish this? WD ΑΣΦΑ T= Submit My Answers Give Up f= Submit Part B What is the magnitude of the friction force on the upper box? | ΑΣΦ | ? My Answers Give Up ? N N

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Exercise 5.33 You are lowering two boxes, one on top of the other, down the ramp shown in the figure (Figure 1) by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 15.0 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.499, and the coefficient of static friction between the two boxes is 0.774. Figure 1 32.0 kg of 1 48.0 kg 4.75 m 2.50 m > Part A What force do you need to exert to accomplish this? T= [VD | ΑΣΦ 5 Submit f= Submit Part B What is the magnitude of the friction force on the upper box? VO Submit My Answers Give Up up the ramp Odown the ramp ΑΣΦ Correct My Answers Give Up BE Tenage Part C What is the direction of the friction force on the upper box? ? My Answers Give Up ? N N
Transcribed Image Text:Exercise 5.33 You are lowering two boxes, one on top of the other, down the ramp shown in the figure (Figure 1) by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 15.0 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.499, and the coefficient of static friction between the two boxes is 0.774. Figure 1 32.0 kg of 1 48.0 kg 4.75 m 2.50 m > Part A What force do you need to exert to accomplish this? T= [VD | ΑΣΦ 5 Submit f= Submit Part B What is the magnitude of the friction force on the upper box? VO Submit My Answers Give Up up the ramp Odown the ramp ΑΣΦ Correct My Answers Give Up BE Tenage Part C What is the direction of the friction force on the upper box? ? My Answers Give Up ? N N
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