A brick is resting on a smooth, level surface. A student applies a force of
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The graphics in the attachment is part of the question, which was incomplete.
Answer: Fr = 102N and angle of approximately 11°.
Explanation: From the attachment, it is observed that from the three forces acting on M, two are perpendicular. So to find them, we have to show their x- and y- axis components. From the graph:
Fx = 70+40-10 = 100
Fy = 40-20 = 20
Now, as the forces form a triangle, the totalforce is:
Fr =
Fr =
Fr = ≈ 102N
To determine the angle requested, we use:
arctg H =
arctg H =
H = tg 0.2 ≈ 11°.
