Answer Happy

Two spur gears in a simple train shown in Figure Q1 are having the same module, m = 2 and their respective number of teeth is Nr. = 30 for the driver gear, and Ntg = 45 for the driven gear. The inertia of the gear attached to the motor is .kgmand the inertia of the second gear is la kgm. The second gear is connected to a pulley with the radius of 30 mm. The pulley is hoisting up the 2kg load with acceleration of a - 2 ms. Given the gear transmission efficiency is 90%. (a) (b) Based on the module and number of teeth given, examine the pitch diameter of each gear. (4 marks) Considering acceleration of load at 2 ms? evaluate the torque of the motor to overcome gears inertia. (9 marks) Considering the 2 kg load, examine the torque required to accelerate the load through gear system. (c) (d) (9 marks) Suggest the minimum torque of the motor to accelerate the 2 kg load at 2 ms. (3 marks) NTG = 45 30 mm Nem = 30 driver a = 2 ms? 2 kg Figure Q1