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A 286 kilogram log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0o with respect to the horizontal. The coefficient of kinetic friction between the ramp and the log is 0.810, and the log has an acceleration of 0.700 m/s. Estimate what the tension in the rope.
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How many packs of shingles can the contractor lift before he begins to slide down the roof assuming the following Contractor weights and values for the coecient of static friction exists between the contractor and the roof.
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