Question

A child exerts a tangential 44.8N force on the rim of a disk-shaped merry-go-round with a radius of 2.20m .
If the merry-go-round starts at rest and acquires an angular speed of 0.0900rev/s in 4.00s , what is its mass in kg?
Thanks!!

Answer 1

@surry99

Answer 2

your thoughts on how to proceed...

Answer 3

I would suggest a diagram looking down from on top the merry go round

Answer 4

okay i literally have no clue how to dothis problem and its due in an hour :( please help!!

Answer 5

@surry99

Answer 6

you need to look up the following:

the sum of the external torques on an object = I*alpha
where I is the moment of inertia and alpha is the angular acceleration

Answer 7

the equations?

Answer 8

i got it never mind ! thanks

Answer 9

Glad to hear that.