Show your work. as needed, in the space given to obtain full mark: QI - The magn

Question

Show your work. as needed, in the space given to obtain full mark: QI - The magnitudes of the three forces shown, in the free-body diagram, below are as follows:F1=3.0 N, F2=13 N, and F3=14 N. Calculate the magnitude and direction of the resultant force (the sum of all the forces acting on this object). ( Give your answer in 2 s.f Name the three forces, if the free-body diagram represents the forces acting on the box being pulled by a boy (as shown in the picture to the right.) Using newton's second law calculate the acceleration of the box and it's direction.

Explanation / Answer

Here ,

for the resultant force ,

F = F1 + F2 + F3

F = 3 j - 13 j + 14 * (cos(45.6) i + j * sin(45.6))

F = 9.8 i - 0 j

F = 9.8 i

the net force is 9.8 N to the right

b) for the block - boy system

F3 is the Tension in the cable

F2 is the gravitatioanl force

F1 is the normal force

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