Question

In first gear, or low gear, an automobile’s engine runs about three times as fast as the drive shaft. In second gear, the
engine does not have to run as fast; usually it runs about 1.6 times faster than the drive shaft. Finally, in third, or high
gear, the engine runs at the same speed as the drive shaft.
Engine speed = 2,100 r.p.m.
Transmission in first gear
Drive-shaft speed:

Answers

  1. Answer:
    700 rpm
    Step-by-step explanation:
    A driveshaft is a shaft that transmits mechanical power.
    Its speed is measured in rpm (revolutions per minute).
    Engine speed
    • First gear: 3 × drive-shaft speed
    • Second gear: 1.6 × drive-shaft speed
    • Third gear:  equal to drive-shaft speed
    Given engine speed:
    • 2,100 rpm
    Therefore, the drive-shaft speeds in the different gears are:
    First gear
    Drive-shaft speed = 2100 ÷ 3 = 700 rpm
    Second gear
    Drive-shaft speed = 2100 ÷ 1.6 = 1312.5 rpm
    Third gear
    Drive-shaft speed = 2100 rpm

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