A wagon weighing 5100 Kg moving at a speed of 8 km/h has to be brought to rest. Springs made of wire diameter 25mm with a Dm of 250mm and with 24 turns are available. Find the number of springs required in buffer to stop the wagon at a compression of 180mm. b) A close coiled helical spring is made of diameter wire 25mm. The spring index is 8. Find the number of turns required and maximum allowable load if the allowable shear stress is 100 MPa and elongation is limited to 40mm. [G=80 GPa

#7 Subject: Statics of Rigid Bodies Last digit # to use: 1 Please answer logically with complete solution (and FBD hopefully), thank you so much!!!!!!

Fnet = ma , Frie, = HkN , x = xo + vozt + ;azt² , vz = Voz + azt , (Va)² = (Voz)² + 2a„Ax Problem 1: Two blocks of mass m1 = 4 kg and m2 = 6 kg are connected by a rope that goes over a frictionless pulley and provides a tension T. m, is accelerating upwards with an acceleration a and m1 is accelerating to the right with an acceleration a. m1 is on a surface that has a kinetic friction coefficient Hk = 0.3. In addition, m1 is being pulled to the right by a force F = 80N that makes an angle 0 = 20° above the horizontal. (a) What is a, the acceleration of the system? (b) What is T, the tension in the rope connecting m1 and m2? а F. g = 9.8 m/sec? T m1 T al m2