Rotational Dynamics Example: Calculate Torque To Spin Disk

Calculate the torque needed to accelerate a disk from a standstill to a given speed in a given amount of time.

[divyanshsahu]

Thankyou so much for making this video!

[injesusname]

What if the mass isnt connected to the shaft, and balanced in between parallel shafts.

[Rish]

Good one🤘🤘..what if I have motor producing torque of 2 Nm ..so to stop motor instantly would I require 2 Nm braking torque??? Please reply soon

[robotochi]

Great video! How would i calculate the torque at stall when spinning continuously?

[ozguniloglu]

Hi, at the last step, you put inertia value which has kg and the output is N.m. Shouldn't we convert kg to N while passing to the torque calculation? thanks for the video

[kittsantos-ocampo]

Hi Joshua. very good video. i learned much. i hv a question. if the disk is not thin but has 3 inches thickness. and is holliw inside. what is the moment of inertia? thanks.

[ericschraud]

Is it supposed to be 10 x10^-3 ? 10^-3 is a different number

[angelleal]

If I have a vertical shaft with 2 more disks fixed to it and evenly distributed how can I find the torque needed to rotate the shaft along with the disks considering all the possible variables in a real life scenario.

[prerupa]

if time is involved in the equation, then no matter how long it takes to accelerate, the disk will always arrive at the speed that any motor can reach, yes or no?

[arisskarpetis]

Does it make any difference if the plane of rotation is parallel or perpendicular to the ground?

[abgbengkel]

Hello sir..can we calculate torq if we only know m, r, and rpm only..

[BuP]

How would you find the frictional torque??

[joshuacolwell]

I just realized my “d” looks like an “alpha”.