A solid cylindrical disk has a radiusof 0.18 m. It is mounted to an axle that is

Question

A solid cylindrical disk has a radiusof 0.18 m. It is mounted to an axle that is perpendicular to thecircular end at its center. When a 64-N force is appliedtangentially to the disk, perpendicular to the radius, the diskacquires an angular acceleration of 120 rad/s2. What isthe mass of the disk?

A solid cylindrical disk has a radiusof 0.18 m. It is mounted to an axle that is perpendicular to thecircular end at its center. When a 64-N force is appliedtangentially to the disk, perpendicular to the radius, the diskacquires an angular acceleration of 120 rad/s2. What isthe mass of the disk?

Explanation / Answer

We know that torque is :                        = I                                                  = m r2         Given :                   = 64 N ; r = 0.18m ; = 120 rad /s2 = 120 / 2   rev /s2                                                                                           = 19.01 rev /s2          mass   m = / r2                              =  64/ (0.18 )2 * 19.01 rev /s2                              = 103 .90 kg Hope this helps u!                              = 103 .90 kg Hope this helps u!

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