Moment is equal to the product of the force and the perpendicular distance from the line of action of the force to the pivot.
So how do we calculate the moment when there are two pivots ??
2007-03-11 00:47:38 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Moment is by definition is the rotating effect aboout a point.
When the value of the moment is zero there is no rotatation about that point.
Whether there are one povot or too many pivots, it is not a matter.
Similarly there are infinite points in a system
We find the moment about any point and determine whether the force produce rotation or not about that point.
2007-03-11 01:41:17 · answer #1 · answered by Pearlsawme 7 · 0⤊ 0⤋
you do not distinguish between the vertical an horizontal forces. each and each second about a level is the made up of the stress and the perpendicular distance from the point to the line of action of the stress. even if the gap must be measured vertically, horizontally or at an attitude would not count number number. i will attempt an party. the following is a sq., ABCD, measuring 4mx4m. it truly is pivoted on the centre. A****B ****** ****** D****C 3 forces act at A,B and C as follows: A: horizontally 10N suitable B: vertically 20N down C: horizontally 10N left. What vertical stress is significant at D to stay away from rotation? second from stress at A = 10 x 2 = 20Nm clockwise second from stress at B = 20 x 2 = 40Nm clockwise second from stress at C = 10 x 2 = 20Nm clockwise finished second = 20+40+20=80Nm clockwise. enable F be the vertical stress through D (downwards so it has an anticlockwise second) second of F about centre = Fx2 anticlockwise. So Fx2 = 80 F=40N downwards obviously F could were 40N to the right - and it may nonetheless have the mandatory anticlockwise second to stop rotation. Or F may be at 45degree pointing down/suitable. if so, because the gap from D to centre = (a million/2)sqrt(2^2+2^2) = a million.414m, Fx1.414 = 80 and F could be 80/a million.414 =57N wish it truly is smart!
2016-12-01 20:03:51 · answer #2 · answered by rosenzweig 4 · 0⤊ 0⤋
If there are two pivots, then the object won't be able to turn.
2007-03-11 03:45:24 · answer #3 · answered by Gnomon 6 · 0⤊ 0⤋
find the sum of the moments
2007-03-11 00:50:55 · answer #4 · answered by iyiogrenci 6 · 0⤊ 0⤋