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I’m not sure I understand the question. Final speed depends on acceleration and duration (time) of acceleration. Alternatively, from an energy standpoint, final speed depends on initial speed and the amount of energy put into the system through a torque.

@@joshuacolwell what would happen if the motor could not have enough torque to accelerate the disc ? Would it take longer to accelerate at some specific velocity, or the rpm of the disc would decrease ?

No, I didn’t. The mass is factored out and multiplied through. Since mass appears in both the kinetic energy and gravitational potential energy, I factored it out on the right hand side.

@@joshuacolwell Thanks a lot !

yes it is just a motor with a crank on it, connected to a battery, a motor when not powered through its terminals, can be used to power other things through its terminals by exterting energy into the shaft of the motor, creating energy to travel through the terminals that would have been used to power the motor.

i realize I am kinda randomly asking but do anybody know of a good site to watch new movies online ?

Torque changes the angular momentum of an object which means usually that it is changing the rate of rotation. If you know the value of mass radius and angular velocity in revolutions per minute then you can calculate the angular momentum of some thing. But that doesn’t tell you anything about any torque acting on the object you need some other information to know how the angular momentum is changing in order to determine the torque.

Another way to look at it is by dimensional analysis: torque has units of force times distance, which means it has time squared in the denominator. The quantities you mention are distance, mass, and angular rotation rate, which just has one time in the denominator. So, again, you would need two values of rpm (start and finish) and the time interval between them, as one example, to calculate the torque to give that change in angular momentum.

Bhai plz comment in my video that how was it

What is there to laugh 🤔🤔 God knows

Law of inertia not power😂

@@atruebeyblader8665 whatever 😂

Nice dp or profile 😂😂

Mari dp apne piche bandar chod gayi 😂😂

its a motor with a crank connected to the output shaft, turning the output shaft into an input shaft, and turning the terminals of which you would use to power the motor into a terminal which transmits the power exterted into the input shaft into electrical energy.

Can u explain me somthing about inrtiea I do not know about special inertia plx

@@danishmushtaqdraboo5729 thats inertia! the tendency of an object to remain in the state (whether rest or motion)

@@yourstrulytk12worldaffairs I know the bottle is on the rest if we pulled the cloth .Bottle cotined will remain on its state .But looking at it all with my own eyes .Tell me how is this process what goes on in its So that does not fall, the bottle stays in that state. Choro yrra ma.nhi samaj pawo.ga

@@danishmushtaqdraboo5729 according to Newton's law of intertia lf an object is in rest then it's tendency to remain in rest either any external force applied on it .

@@danishmushtaqdraboo5729 ok bro 😀

This example works out the net torque that must be applied to the disk. If there is friction, then the motor torque minus the frictional torque equals I times alpha. We have enough information to calculate I and alpha, but we would need additional information to calculate the frictional torque, such as the torque applied by the motor. With the information provided we can only calculate the net torque.

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@@time-passers9286 kyaaaaaaa

@@VijayKumar-sd2dn aur upar tho bass mazak kar raha tha ignore it 😅😅

No problem I'm just really greatfull you made this video I have to submit an assignment tomorrow it's 12:08am in india and I can only complete my assignment bc of u.

@@joshuacolwell Thanks for confirming that. I am making a turntable for product photography and I found your video super-useful for calculating the torque required to spin a 1m diameter 15mm thick plywood disk to 10rpm in 3 seconds so I could choose the an appropriate dc motor (most likely with an attached gearbox) to direct drive the disc. The disc is about 5.7kg so the torque works out to be 0.1529 Nm.