Simple Gears Explained | Calculate Gear Ratio, Torque & Angular Speed

[@INTEGRALPHYSICS]

Before you ask... The gear sketch is 20 minutes compressed to 12 seconds.

[@royalrao2400]

Good efforts keep going , videos have quality content

[@asmox79]

Can you recommend some materials how to sketch the gears like you did please?

[@ConnorTolan]

Brilliant video, very informative and clear explanation, cheers.

[@mamseng]

Very nice and clear VDO, I can have my engineering student watch your gear playlist :) . Love seeing your sketch! Super nice!!!! Thank you for sharing great vdo.

[@INTEGRALPHYSICS]

Thank you very much!

[@GeorgePantel84]

3:00 because you have only one point of contact you can draw an infinite number of lines. So the "line of action" has infinite orientations. You need at least 2 points to draw a line.

[@INTEGRALPHYSICS]

to define a line you need two points OR a point and a direction. (at the risk of oversimplifying) in the case of an ideal gear the line of action is normal to the gear teeth.

[@GeorgePantel84]

@@INTEGRALPHYSICS Ok, but the tooth ar rounded and at 2:40 where you put the points of contact on each gear you can see that if you draw a line between those points it results in a slightly incline line.

[@dbxgaming4192]

if newtons law is applied here then why is the output Force the same direction as the input force, shouldn't it be in the opposing direction according to the law?

[@INTEGRALPHYSICS]

We look first at the force BY the input gear, then the force ON the output gear. They are in face the same force, not an action reaction pair.

[@NeilEngelbrechtMechSeal]

@@dbxgaming4192 that applies to a push/pull force, with movable objects, loose rifle, loose shooter = recoil and opposing directions, here you are dealing with fixed in place axis and the force is rotational (specific to pulley and chain assemblies ) gear trains work as you describe

[@NeilEngelbrechtMechSeal]

Ok so in laymen's terms, can I devide the number of teeth in a drive gear by the teeth of the driven gear and that gives you the RPM ? Basically my drive sprocket has 20 teeth and driven sprocket has 40 teeth, so my driven gear will rotate at ½ that rpm of the drive gear. So my logic says to me the same system will then have the driven gear at 2x the torque of the drive gear

[@StrsAmbrg]

Nice. But what I don't understand about gear and torque is, when a car is explained that it has torque and power at certain RPM. Torque is gained at certain RPM so does its power (mostly in horse power). The engine power is gain at certain RPM, of course, it is clear. But how does torque is related to RPM? From your explanation, it is clear that torque is not related to RPM, but work it is.

[@INTEGRALPHYSICS]

The Torque vs Power argument with respect to cars always drives me a bit crazy. Power is proportional to Torque x rpm. So as rpm increase so does the power. And heres the main idea. It is power not torque that dictates the rate of change in velocity (ie acceleration) I keep meaning to do a video on that one. Hopefully soon.

[@ramirogonzalez7063]

Thanks, I got aphasia after my stroke. I'm watching this so I can reteach gear math