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प्रश्न
उत्तर
The turning effect produced by a force on a rigid body about a point, pivot or fulcrum is called the moment of force or torque. It is measured by the product of force and the perpendicular distance of the pivot from the line of action of force.
Examples of turning effect of force:
(i) Turning a steering wheel
(ii) Tightening a cap
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?
What do you mean by the clockwise and anti-clockwise moment of force?
Find the moment of force of 20 N about an axis of rotation at distance 0.5 m from the force.
Write an expression for the change in momentum of a body of mass m moving with velocity v if v << c.
Name of S.I. unit of momentum.
State two factor on which moment of force about a point depends.
The moment of a force about axis depends ______.
Classify the following amongst contact and non-contact forces.
electrostatic force
Give an example of the following uses of a machine:
to change the direction of force
How does the distance of separation between two bodies affect the magnitude of the non-contact force between them?
