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Physics can someone help me answering this A 0.8-kg particle Pis constrained to move along the vertical-plane circular slot of radius r = 1.1 m and is confined to the slot of arm OA, which rotates about a horizontal axis through O with a constant angular rate (? = 2.1 rad/s. For the instant when = 17% determine the magnitue of the force N exerted on the particle by the circular constraint and the magnitude of the force R exerted on it by the slotted arm. Answers: N IN