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The mailman brought Ralph's lead ball.

The mailman brought Ralph's lead ball. The hinged 9m drawbridge to Ralph's house collapses when he is one meter from the mailbox (attached to the end of the drawbridge). Cable is attached 7m horizontally from the wall at an angle of 30 above the horizontal. Mass of mailbox with lead ball is 100kg. Weight of drawbridge (center of mass is 5m from wall) is 2000N, and Ralph has mass 25kg. What is the tension in the cable?

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