You are trying to move a light fixture into an apartment. There are hooks in the

Question

You are trying to move a light fixture into an apartment. There are hooks in the elevator so you hang the fixture on a hook with a chain. You don't want the fixture to touch the walls, so you attach a rope to the side and are pulling horizontally as shown, holding the fixture stationary with respect to the elevator. Note theta =30 degrees.

As the elevator ascends vertically, the magnitude of the force from the chain on the fixture as a function of the vertical position of the elevator, y, is F(y)=F0e^(?y/y1) where F0=130 N and y1=3 m. Using the fixture as your system, if the elevator goes from y=0 to y=5.1 m, what is the work done by the force from the chain on the fixture?

Explanation / Answer

the figure is not shown plus please make the symbols more understandable

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