Problem 12PE

Suppose the weight of the drawbridge in Figure 9.34 is supported entirely by its hinges and the opposite shore, so that its cables are slack. (a) What fraction of the weight is supported by the opposite shore if the point of support is directly beneath the cable attachments? (b) What is the direction and magnitude of the force the hinges exert on the bridge under these circumstances? The mass of the bridge is 2500 kg.

Step 1 of 4

For the drawbridge to be in equilibrium, the net torque acting on it has to be zero. Here, the two torques acting are, one due to the weight of the drawbridge and the other due to the force .

Part a