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categoryهندسة ميكانيكية
schoolبكالوريوس
event_available2026-07-13
السؤال
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Motion of a Block with Three Forces
Three forces of magnitudes F, 4.0 N, F = 6.0 N, and F, 8.0 N are applied to a block of mass m = 2.0 kg,
initially at rest, at angles shown on the diagram. In this problem,
you will determine the resultant (net) force by combining the
three individual force vectors. All angles should be measured
counterclockwise from the positive x axis (i.e., all angles are
positive).
325°
25
Part A
Calculate the magnitude of the resultant force FF+F+F, acting on the block.
Express the magnitude of the resultant force in newtons to two significant figures.
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ΜΕ ΑΣΦ
N
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Part B
What angle does F, make with the positive x axis?
Express your answer in degrees to two significant figures.
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?
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degrees
Part C
What is the magnitude of the block's acceleration vector, «?
Express your answer to two significant figures.
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a-
?
m/s²
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Part D
What is the direction of a? In other words, what angle does this vector make with respect to the
positive x axis?
Express your answer in degrees to two significant figures.
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degrees
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Part E
How far (in meters) will the block move in 5.0 ? Recall that it starts from rest.
Express the distance d in meters to two significant figures.
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