# Homework Help: A flywheel makes 80 radians in 4 second and is rotating with constant angular acceler

1. Jun 3, 2012

### manal950

A flywheel makes 80 radians in 4 second and is rotating with constant angular acceleration during this time . It makes 60 radians in next 4 second with constant angular velocity .
Find initial angular velocity and the angular acceleration ?

form this equation
Q= w0t + 1/2at^2
80 = w0(4) + 1/2(a)(4)^2 ==== 1
w = w0 + at
15 = w0 + a(4) ========= 2

so from this two equation we find a and v

2. Jun 4, 2012

### ehild

Re: A flywheel makes 80 radians in 4 second and is rotating with constant angular acc

Write the equation for Q after the additional 4 s time.

ehild