Question
Asked Mar 25, 2019
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The figure shows three forces applied to a trunk that moves leftward by 3.13 m over a frictionless floor. The force magnitudes are F1 = 5.35 N, F2 = 8.64 N, and F3 = 3.02 N, and the indicated angle is θ = 60°. (a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the normal force? (b) Is there a net transfer of energy to or from the trunk? (c) Does the kinetic energy of the trunk increase or decrease?

 

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Expert Answer

Step 1

The given figure shows the forces applied to a trunk that moves to leftwards by 3.13 m.

Given:

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Step 2

Calculation:

a)

The net force acting on the trunk is the sum of all forces acting on the trunk. So,

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Step 3

The work done is ...

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Tagged in
SciencePhysics

Work,Power and Energy

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