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OpenStudy (anonymous):
In Fig. 5-36, let the mass of the block be 8.5 kg and the angle θ be 30°. Find (a) the tension in the cord and (b) the normal force acting on the block. (c) If the cord is cut, find the magnitude of the resulting acceleration of the block. i just want to know why you use sin to find the tension and not cos
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OpenStudy (anonymous):
OpenStudy (anonymous):
no you have to use sin but dunno why...i have the working
OpenStudy (anonymous):
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