An object at rest begins to rotate with a constant angular acceleration. If the angular speed of the object is

Question

An object at rest begins to rotate with a constant angular acceleration. If the angular speed of the object is after the time t, what was its angular speed (in terms of ) at the time t/2?

Answer 1

The equations of motion are
w=a*t
where w is the angular speed and a is the angular acceleration

so w1=a*t
t=w1/a

t/2=w1/(2*a)
so w2=w1/2

j

Answer 2

Or a much simpler way: a= (GM)/r^2 G= gravitational constant M= Mass r= radius I don't have a calculator, but your units are correct to get an answer in m/s^2 So simply multiply and divide I'd solve it for you but I can't exactly do that in my head and with this equation it's quite simple