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Mathematics 16 Online
OpenStudy (anonymous):

A crate is dragged 3m along a smooth level floor by a 30N force, applied at 25 degrees to the floor. Then, it is pulled 4m up a ramp inclined at 20 degrees to the horizontal, using the same force. Then, the crate is dragged a further 5m along a level platforum using the same force again. Determine total work done in moving the crate.

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