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1. A parcel of weight W is attached to the lever at point A. The spring is unstretched when the lever is vertical and

1. A parcel of weight W is attached to the lever at point A. The spring is unstretched when the lever is vertical and the constant of spring BC is k=250 N/m. Determine the weight of the parcel W if the system is in equilibrium when the lever makes an angle of 30 with the vertical axis. 35 A W 30 5 m F= KX www 3 m

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