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he path of motion of a 7-lb particle in the horizontal plane is described in terms...

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Mechanical Engineering

he path of motion of a 7-lb particle in the horizontal plane isdescribed in terms of polar coordinates as r = (3t + 1)ft and θ = (0.5 t2 − t)rad, where t is in seconds.Determine the magnitude of theunbalance force at t = 3.0 seconds.

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