Question

50 N
60 deg
Vas
In the figure above, 50 Newtons of Force are pushing at a downward 60 degree angle as shown,
The part of the force parallel to the ground is 25 Newtons. If the lawnmower is pushed 20 meters
in a straight line what work is done by the force pushing the mower?
O 500 J
O 250 J
1000 J
60 J

Answer 1

The work is done by the force pushing the mower is determined as 500 J.

Work done by the force

The work done by the force is calculated as follows;

W = Fsinθ x d

where;

• Fsinθ = Fx  is the applied force parallel to the ground
• d is the distance
• θ is the angle of inclination

W = Fx(d)

W = 25 x 20

W = 500 J

Thus, the work is done by the force pushing the mower is determined as 500 J.

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