The angular velocity of a fly wheel increases 0 to 40 rad/s, in 8 secs. What is it's total angular displacement in this time ?

Explanation

`w=w_@ + alphat therefore40=0+alphaxx8 thereforealpha=5(rad)/s^2`
`and theta = w_@t+1/2 alphat^2=1/2xx5xx64=160 rad.`