Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
The body will move in the direction of net torque
Net torque = sum of clockwise moments - sum of anticlockwise moments
In the given figure, force 40N is acting clockwise and forces 20N and 60N are acting anticlockwise
Net torque = (40 x 3) - [(20 x 2) + (60 x 1)}
= 120 - 100
= 20 Nm
Hence the body will move in clockwise direction about 'O'
APPEARS IN
संबंधित प्रश्न
Moment of force =............... × distance of force from the point of turning.
What do you mean by the clockwise and anti-clockwise moment of force?
On what factors does the effect of thrust on a surface depend?
Sleepers are used below the rails.
A body is acted upon by two forces of magnitude F but in opposite directions. State the effect of the force if both forces act at the same point of the body.
Classify the following amongst contact and non-contact forces.
normal reaction force,
(i) What do you understand by the term couple of forces?
(ii) Calculate the moment of a couple shown in fig.
A jack screw is provided with a long arm. Explain why?
State the effects that a force can produce. Given one example of each.
A door lock is opened by turning the lever (handle) of length 0.2 m. If the moment of force produced is 1 Nm, then the minimum force required is ______.
