The 300-N block in the figure is at rest on the rough horizontal plane before the force P is applied at t = 0. The magnitude of P is 80t N, where t is the time in seconds, and its direction is constant. The coefficients of static and kinetic friction are u, = 0.40 and µ̟ = 0.20, respectively. Which of the following most nearly gives velocity of the block after 5 seconds? 300 N P = 80t N

The 300-N block in the figure is at rest on the rough horizontal plane before the force P is applied at t = 0. The magnitude of P is 80t N, where t is the time in seconds, and its direction is constant. The coefficients of static and kinetic friction are u, = 0.40 and µ̟ = 0.20, respectively. Which of the following most nearly gives velocity of the block after 5 seconds? 300 N P = 80t N

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

The 300-N block in the figure is at rest on the rough
horizontal plane before the force P is applied at t = 0.
The magnitude of P is 80t N, where t is the time in
seconds, and its direction is constant. The coefficients
of static and kinetic friction are µ̟ = 0.40 and µk =
0.20, respectively. Which of the following most nearly
gives velocity of the block after 5 seconds?
300 N
P = 80t N

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