Answered: 18.0 kg 27.0 kg 3.50 5.75 m

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter2: Vectors

Section: Chapter Questions

Problem 21CQ: What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c)...

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Question

Consider the figure shown in the following figure. You are lowering two boxes, one on top of the other, down a ramp by pulling on a rope parallel to the surface of the ramp. Both blocks move with constant velocity of 10.0 [m/s]. The coefficient of kinetic friction between the ramp and the lower box is 0.555 and the coefficient of static friction between the two boxes is 0.750.

1. Write Newton's 2nd law of motion along the x and y directions for both blocks considering their state of motion.
2. What are the magnitude and direction of the firctional force on the upper box?
3. Draw the free-body diagram of both blocks. Set the x-axis parallel to the ramp.

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