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anonymous
 one year ago
A 70.0 kg sailor climbs a 28.3 m rope ladder at an angle of 45.0° with the mast. How much work did he do?
A. 19,400 J
B. 686 J
C. 1,400 J
D. 13,700 J
:/
anonymous
 one year ago
A 70.0 kg sailor climbs a 28.3 m rope ladder at an angle of 45.0° with the mast. How much work did he do? A. 19,400 J B. 686 J C. 1,400 J D. 13,700 J :/

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1the requested work W is: \[W = mgd\cos \left( {45} \right) = 70 \times 9.81 \times 28.3 \times \cos 45\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1since we havfe to consider the projection of the weight force, along the direction of the displacement

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh okay! and so we calculate and get 13741? so our solution is D? 13,700 J since it is approximation?
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