Question

Jim uses a spanner to turn a bolt The bolt does not turn with a push of 50 N.Jim knows that using a longer spanner will make the bolt more likely to turn with a push of 50 N. Explain why.?

Answer 1

Using a longer spanner increases the torque applied to the bolt, making it more likely to turn with the same force.

Step-by-step explanation:

When using a spanner to turn a bolt, the torque exerted depends on both the magnitude of the force applied and the distance from the center of rotation. This is known as the moment arm, which is the perpendicular distance between the line of action of the force and the center of rotation. By using a longer spanner, the moment arm increases, resulting in a greater torque for the same force.

For example, if Jim exerts a force of 50 N with a short spanner, the moment arm might be 10 cm. With a longer spanner, the moment arm could be 20 cm. The torque exerted would be greater with the longer spanner because torque is equal to force multiplied by the moment arm.

Therefore, by using a longer spanner, Jim can increase the torque applied to the bolt, making it more likely to turn with a push of 50 N.