My teacher asked me this question in a viva voce...Could nt answer
2006-12-16 02:26:15 · 8 answers · asked by robin 3 in Science & Mathematics ➔ Engineering
In physics, torque can informally be thought of as "rotational force". The SI units for Torque are newton metres although centinewton meters (cN·m), foot-pounds force (ft·lbf), inch pounds (lbf·in) and inch ounces (ozf·in) are also frequently used expressions of torque. The symbol for torque is τ, the Greek letter tau. The concept of torque, also called moment or couple, originated with the work of Archimedes on levers.
In physics, the moment of force (often just moment, though there are other quantities of that name such as moment of inertia) is a quantity that represents the magnitude of force applied to a rotational system at a distance from the axis of rotation. The concept of the moment arm, this characteristic distance, is key to the operation of the lever, pulley, gear, and most other simple machines capable of generating mechanical advantage. The SI unit for moment is the newton meter (Nm).
Moment = Magnitude of Force x Perpendicular distance to the pivot (Fd)
2006-12-16 04:34:38 · answer #1 · answered by Anonymous · 4⤊ 0⤋
In physics, torque and the moment of force are the same thing, the definition being the magnitude of force applied to a rotational system at a distance from the axis of rotation. Both are measured in a value consisting of force * distance eg Nm or lbft
2006-12-16 04:28:19 · answer #2 · answered by always asking questions 2 · 0⤊ 2⤋
Moment usually involves the application of force on a lever arm, resulting in a torque as measured at the shaft.
Torque always deals with a shaft output, regardless of how it is generated.
2006-12-16 07:05:37 · answer #3 · answered by www.HaysEngineering.com 4 · 1⤊ 1⤋
If I had to guess, I'd say that a "moment" is a more general term and torque is usually reserved for moment about an axis; particularly in reference to a motor, but it could be the axis of something like a bolt too.
2006-12-16 03:37:10 · answer #4 · answered by Anonymous · 0⤊ 2⤋
Moment is movement around a pivot such as a sea-saw. Torque is just a twisting movement, it two opposite rotational forces acting on an object :)
2006-12-16 03:05:51 · answer #5 · answered by Anonymous · 0⤊ 2⤋
moment is related to the mass distribution ,sum of moment equal to zero,torque is power.
2006-12-23 20:37:28 · answer #6 · answered by doubt 1 · 0⤊ 0⤋
It depends upon whether the axis of rotation is driving the rotation, or being driven by external force(s) to cause the rotation ☺
Doug
2006-12-16 02:56:09 · answer #7 · answered by doug_donaghue 7 · 0⤊ 2⤋
I know of no difference. I have used these terms relatively interchangeably.
2016-03-17 21:48:34 · answer #8 · answered by Anonymous · 0⤊ 0⤋