A 300 kg merry-go-round in the shape of a horizontal disk with a radius of 1.9 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. How large a torque would have to be exerted to bring the merry-go-round from rest to an angular speed of 3.6 rad/s in 3.5 s

557.7Nm

Explanation:

We are given that

Radius,r=1.9 m

Angular speed,

Time,t=3.5 s

Initial angular velocity,

We have to find the large torque would have to be exerted .

Where

Substitute the values

magnified images possible images can be real = projected onto a screen

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.