### What is the initial angular acceleration of the bridge

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A uniform drawbridge must be held at a 35.0?angle above the horizontal to allow ships to pass underneath. The drawbridge weighs 4.05×104N , is 13.5m long, and pivots about a hinge at its lower end. A cable is connected 3.25m from the hinge, as measured along the bridge, and pulls horizontally on the bridge to hold it in place.

If the cable suddenly breaks, what is the initial angular acceleration of the bridge? (in rad/s^2)

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