A man pulls a 100-N crate up a frictionless 30° slope 5-m high, as shown. Assuming that the crate moves at a constant speed, the work done by the man is: a. - 500 J b. - 250 J c. 0 J d. + 250 J e. + 500 J
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A man pulls a 100-N crate up a frictionless 30° slope 5-m high, as shown. Assuming that the crate moves at a constant speed, the work done by the man is:
a. - 500 J
b. - 250 J
c. 0 J
d. + 250 J
e. + 500 J
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