Answer: 18.84 rad/s
Explanation:
V = u + at
V = 6.28 + (3.14 x 4 )
V = 18.84 rad/s
Answer: The angular acceleration of the fan is [tex]-0.79rad/s^2[/tex]
Explanation:
To calculate the angular acceleration of the fan, we use first equation of motion:
[tex]v=u+at[/tex]
where,
v = final angular velocity of the fan = 3.14 rad/s
u = initial angular velocity of the fan = 6.28 rad/s
a = angular acceleration of the fan = ?
t = time = 4.0 sec
Putting values in above equation, we get:
[tex]3.14=6.28+(a\times 4.1)\\\\a=\frac{3.14-6.28}{4.0}\\\\a=-0.79rad/s^2[/tex]
Hence, the angular acceleration of the fan is [tex]-0.79rad/s^2[/tex]
