# physic

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Before practicing his routine on the rings, a 67 kg gymnast hangs motionless, with one hand grasping each ring and his feet touching the grounnd. Both arms make an angle of 24 degrees with the vertical.(a) If the force exerted by the rings on each arm has a magnitude of 290 N, what is the magnitude of the force exered by the floor on his feet? (b) If the angle his arms make with the vertical had been greater that 24 degrees, would the force exerted by the value found in part (a). explain.

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