calculate the tension in the string and the reaction at the hinge. Describe an experiment to verify the law of conservation of linear momentum
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A trap door 120 cm by 120 cm is kept horizontal by a string attached to the mid-point of the side opposite to that containing the hinge. The other end of the string is tied to a point 90 cm vertically above the hinge. If the trap-door weight is 50 N, calculate the tension in the string and the reaction at the hinge. Describe an experiment to verify the law of conservation of linear momentum
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