When the inertia forces are overcome the cage travels at a constant velocity of 3 m/s, determine the workdone

Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object. Force is mass times acceleration. The problem says the system is at constant velocity therefore acceleration is zero. Thus, work done would be zero as well.

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OPTION A

Step-by-step explanation:

It is important to remember the "Angle Addition Postulate" in order to solve this exercise.

You have this larger angle:

 

According to the "Angle Addition Postulate", if the point "C"  is in the interior of , then the measure of this angle can be obtained by adding the angle and the angle .

You can observe in the figure that:

 

Then you get that:

Therefore, the correct answer is Option A.