A 20° full depth spur pinion is required to transmit 1.8 kW at a speed of 1540 rpm. If the pinion has 21 teeth and is manufactured from a heavy duty 817M40 steel; Select a suitable gear from the limited choice given in Tables 6.7 -6.10, specify the:
1.1 module and face width based on the Lewis formula. (9)
1.2 the gear module and the face width if the power transmitted is doubled (3)
1.3 the gear module and the face width if the speed is doubled and the power is still 1.8 kW? (3)
Hint: In all the above, show all your calculation steps (Start with m =1) in all cases.
From the law of conservation of momentum
where vii- velocities before collision are v1i=5 m/s Particles of