A worker pulls a box of mass 65 kilogram on the floor at an
A worker pulls a box of mass 65 kilogram on the floor at an angle 20 degree above the horizontal. The coefficient of static friction between the floor and the box is 0.35. Find the force needed to maintain the box moving with a constant speed?
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the sound intensity level at a rock concert is 115 db while that at a jazz fest is 95 db find the ratio of sound
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a worker pulls a box of mass 65 kilogram on the floor at an angle 20 degree above the horizontal the coefficient of
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