Advertisements
Advertisements
Question
Advertisements
Solution
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
RELATED QUESTIONS
Where can a body execute free vibrations?
State one way to decrease the moment of a given force about a given axis of rotation.
State one factor on which the magnitude of a non-contact force depends. How does it depend on the factor stated by you?.
State Newton's third law of motion.
Name and define the S.I. and C.G.S. units of force. How are they related?
The diagram in the figure shows a uniform metre rule weighing 100 gf, pivoted as its centre O. two weight 150 gf and 250 gf hang from the point A and B respectively of the metre rule such that OA = 40 cm and OB = 20 cm . Calculate
the total anticlockwise moment about o.
How does the distance of separation between two bodies affect the magnitude of the non-contact force between them?
State two factors on which moment of the force about a point depends.
State the units of moment of force.
The diagram in Fig shows two forces F1 = 5 N and F2 = 3 N acting at points A and B respectively of a rod pivoted at a point O, such that OA = 2 m and OB = 4 m.
Calculate:
- the moment of force F1 about O.
- the moment of force F2 about O.
- total moment of the two forces about O.
