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Moment of force = ………….. [1]

Distance between A and M = ………….. [2]

(a) Picture Attached

(b)

i. 30 Nm

ii. Distance between A and M = 0.375 m

Explanation:

(a)

The other two forces are as follows:

1. The weight of wheel barrows acting downward at Point m

2. The Normal Reaction acting upward on wheel

These are show in the picture attached in solution.

(b)

i-

Now, for the moment of 20 N force about the point A:

Moment = 30 Nm

ii.

We take the sum of all moments about point A. Taking counter-clockwise direction as positive:

Distance between A and M = 0.375 m

be subject to a force andchange its motion