Advertisements
Advertisements
प्रश्न
Define couple.
Advertisements
उत्तर
Two equal and opposite forces acting perpendicular and separated by some distance d is called a couple.

A couple of causes are pure rotation.
APPEARS IN
संबंधित प्रश्न
Moment of force = force × perpendicular distance of force – from the pivoted point.
SI. unit of moment of force is
How does the effect of force differ when it is applied on a non-rigid body?
A wheel of diameter 2 m is shown in the figure with the axle at O. A force F = 2 N is applied at B in the direction shown in the figure. Calculate the moment of force about
- the centre O, and
- the point A.

Three forces A, B and C are acting on a rigid body which can turn about O in fig.9. If all the three forces are applied simultaneously, in which direction will the body move? Explain.

In a beam balance when the beam is balanced in a horizontal position, it is in ________ equilibrium.
State two factors on which moment of the force about a point depends.
State the effects that a force can produce. Given one example of each.
Write the expression for calculating the moment of force about a given point.


A metal rod AB of length 80 cm is balanced at 45 cm from the end A with 100 gf weights suspended from the two ends.
- If this rod is cut at the center, C, then compare the weight of AC to the weight of BC. (Use >, < or =)
- Give a reason for your answer in (a).
