Answer:
community College program and maddie d
Explanation:
work business work and maddie
6.75J
U=1/2KΔx²
U=0.5* 150*0.30^2
θ= 5 radian
Given data:
Radius r = 0.70 m
Initial angular speed ω_i = 2rev/s
Time t = 5 s
Final angular speed ω_f =0
so we have angular displacement
putting values
= 5 rad