Advertisements
Advertisements
प्रश्न
The perpendicular distance between the point of application of force and turning point is 1.75 m when a force of 80 N acts on a rigid body. Calculate the moment of force.
Advertisements
उत्तर
Force (F) = 80 N
Perpendicular distance = 1.75 m
∴ Moment of force = F × perpendicular distance
= 80 × 1.75 = 140 Nm.
संबंधित प्रश्न
Less force is needed when applied at a farther distance from the pivoted point.
State the effect of force F in of the following diagram.

Classify the following amongst contact and non-contact force.
force of tension in a string
State Newton's Second law of motion. Under what conditon does it take the form F = ma?
What do you understand by the clockwise and anticlockwise moment of force? When is it taken positive?
A spanner (or wrench) has a long handle. Why?
Classify the following amongst contact and non-contact forces.
Frictional force
One joule is the amount of work done when a force of ......... moves a body through a distance of .......
Assertion & Reasoning
- Assertion: The sum of the clockwise moments is equal to the sum of the anticlockwise moments.
- Reason: The principle of conservation of momentum is valid if the external force on the system is zero.
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.
