Part (a). P = 0. Since the force F needed to keep the crate from moving is larger than the maximum friction force Fmax that is available, we know that the crate does move. Solve for the acceleration of the block. We will assume that the acceleration is positive if it moves up the slope.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Part (a). P = 0. Since the force F needed to keep the crate from moving is larger than the maximum friction force Fmax that is
available, we know that the crate does move. Solve for the acceleration of the block. We will assume that the acceleration is
positive if it moves up the slope.
mg
a
P
F
N
Answer: a =
i
m/s2
Transcribed Image Text:Part (a). P = 0. Since the force F needed to keep the crate from moving is larger than the maximum friction force Fmax that is available, we know that the crate does move. Solve for the acceleration of the block. We will assume that the acceleration is positive if it moves up the slope. mg a P F N Answer: a = i m/s2
The 33-kg crate is stationary when the force Pis applied. Determine the resulting acceleration of the crate if (a) P-0, (b) P- 143 N,
and (c) P- 322 N. The acceleration is positive if up the slope, negative if down the slope.
[H, = 0.37
H = 0.29
33 kg
Part 1
v Correct
Part (a). We need to decide if the block moves. The easy way to make this decision is to assume that the block does not move and
then to test this assumption. If P-0, what friction force Fis needed to keep the block from moving?
mg
Answer: F-
136.014
eTextbook and Media
Hint
Attempts: 2 of 3
used
Part 2
Correct
Part (a). P- 0. What is the maximum friction force Fmey that is availalbe for this situation?
mg
Answer: Fmax -
108.55
Transcribed Image Text:The 33-kg crate is stationary when the force Pis applied. Determine the resulting acceleration of the crate if (a) P-0, (b) P- 143 N, and (c) P- 322 N. The acceleration is positive if up the slope, negative if down the slope. [H, = 0.37 H = 0.29 33 kg Part 1 v Correct Part (a). We need to decide if the block moves. The easy way to make this decision is to assume that the block does not move and then to test this assumption. If P-0, what friction force Fis needed to keep the block from moving? mg Answer: F- 136.014 eTextbook and Media Hint Attempts: 2 of 3 used Part 2 Correct Part (a). P- 0. What is the maximum friction force Fmey that is availalbe for this situation? mg Answer: Fmax - 108.55
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