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प्रश्न
To obtain a given moment of force for turning a body, the force needed can be decreased by
पर्याय
applying the force at the pivoted point
applying the force very close to the pivoted point
applying the force farthest from the pivoted point
none of the above
उत्तर
applying the force farthest from the pivoted point
APPEARS IN
संबंधित प्रश्न
A half metre rod is pivoted at the centre with two weights of 20gf and 12gf suspended at a perpendicular distance of 6 cm and 10 cm from the pivot respectively as shown below.
1) Which of the two forces acting on the rigid rod causes clockwise moment?
2) Is the rod in equilibrium?
3) The direction of 20 kgf force is reversed. What is the magnitude of the resultant moment of the forces on the rod?
SI. unit of moment of force is
A potter turns his wheel by applying a force through the stick near the rim of wheel.
A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.
Name of S.I. unit of the rate of change in momentum.
A, B and C are the three forces each of magnitude 4 N acting in the plane of the paper as shown in Figure. The point O lies in the same plane.
- Which force has the least moment about O? Give a reason.
- Which force has the greatest moment about O? Give a reason.
- Name the forces producing
(a) Clockwise
(b) anticlockwise moments. - What is the resultant torque about the point O?
Classify the following amongst contact and non-contact forces.
normal reaction force,
State two factors affecting the turning effect of a force.
Give any two effects of a force on a non-rigid body.
