Question

13.
Jenny and her brother Tom sit on opposite ends of a seesaw. Jenny is
40 kg and her brother is 30 kg. If Jenny sits 1.5 meters from the pivot
point and Tom sits 1 meter from the pivot point, what is the net torque
on the seesaw?

Answer 1

The net torque on the seesaw is 294 Nm.

What is torque?

Torque is the force that tends to rotate the body to which it was applied.

To calculate the net torque, we use the formula below

Formula:

• τ = mgd-m'gd'........... Equation 1

Where:

• τ = Net torque

• m = Jenny's mass
• m' = Tom's mass
• d = Jenny's distance from the pivot
• d' = Tom's distance from the pivot
• g = acceleration due to gravity

From the question,

Given:

• m = 40 kg
• m' = 30 kg
• d = 1.5 m
• d' = 1 m
• g = 9.8 m/s²

Substitute these values into equation 1

• τ = (40×1.5×9.8)-(30×1×9.8)
• τ  = 588-294
• τ  = 294 Nm

Hence, The net torque on the seesaw is 294 Nm.

Learn more about torque here: https://brainly.com/question/14839816