What is the output RPM of a motor with a speed of 900 RPM connected to a 5:1 gear box?

When a motor with a specific speed, in this case, 900 RPM, is connected to a gearbox, the output speed can be calculated by considering the gear ratio of the gearbox. A 5:1 gear ratio indicates that for every 5 turns of the motor's input, the output gear turns once.

To find the output RPM, you divide the input RPM by the gear ratio. Here’s how that works for the given motor speed:

1. Take the input speed of the motor, which is 900 RPM.

2. Divide that speed by the gear ratio of 5:1.

3. The calculation is: 900 RPM ÷ 5 = 180 RPM.

This means that the output speed at the gearbox will be 180 RPM. This situation reflects how gearboxes operate by reducing the output speed while increasing torque based on the gear ratio provided. The correct answer directly results from this simple calculation, emphasizing the reduced speed resulting from the gear ratio mechanics.