hi everyone... I am new comer and new for phsyics.. I have a problem for the following question. /| / | / mass / /__________ A B From point A to B is a simple bridge mad from uniform 6 m long platorm. A rope of negligible mass is attached to other end point A. this rope passess over a smaill frictionless pulley and supports a 110 kg mass on its other end. The angle between the rope and the bridge is 30 deg. would u let me know the mass of the bridge is necessary to consdier to find the tension of the rope ?? I know it is a very simple question....but it is hard for me ..a poor old man.... thanks a lot..