Question

a cd has a mass of 17 g and a radius of 6.0 cm. when inserted into a player, the cd starts from rest and accelerates to an angular velocity of 21 rad/s in 0.52 s. assuming the cd is a uniform solid disk, determine the net torque acting on it.

Answer 1

The net torque acting on it hen inserted into a player, the cd starts from rest and accelerates to an angular velocity of 21 rad/s in 0.52 s are

Here solid disk =Torque$Iα$

• Mass of 17 g and a radius of 6.0 cm

• I = $1/2mR^2$
• wf= 21 rad/s
• wf = w0 +αt
• α= wf - w0 / t = wf /wt
• Torque = $(1/2mR^2)( wf/t)$ = 1/2(0.017)(6.0) (21/0.52)
• Torque  = 2.059
• So the net torque acting on it is $Torque = 2.059$.

Read more about mass :

https://brainly.com/question/13866045

#SPJ4