Question

A 17.0 kg crate is pulled a distance of 20.0 m requiring that 1210 Joules of work be done. If the job is done by attaching a rope and pulling with a force of 75 Newtons, at what angle is the rope held?
work = force * distance

1210 = f * 20.0 ... f = 60.5 N

60.5 N = 75 N * cos(Θ)

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