An Eskimo returning pulls a sled as shown in the figure below. The total mass of the sled is 50.0 kg, and he exerts a force of 120 N on the sled by pulling on the rope. How much work does he do on the sled if the pulling angle is 30° and he pulls the sled 0.5 m? O a 520 Joule Ob. 600 Joule Oc. 120 Joule
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