A lorry of weight 20000N is brought to rest on a uniform bridge, by applying brakes, as shown in the figure below. The weight of the bridge is 60000N and is 20m long. It is supported at P and Q. calculate the reactions at P and Q.
Taking moments about to end Q60,000 x 10 + 20,000 x 14 = Tp x 20Tp = 44,000NBut TQ+Tp = 60,000 + 20,000TQ= 80,000 - 44,000 = 36,000
6.4k questions
9.6k answers
6 comments
590 users