Advertisements
Advertisements
प्रश्न
A wheel of diameter 2 m is shown in the figure with the axle at O. A force F = 2 N is applied at B in the direction shown in the figure. Calculate the moment of force about
- the centre O, and
- the point A.
Advertisements
उत्तर
Diameter of wheel = 2 m
Radius of wheel = `2/2` = 1 m
Force applied at B = 2 N
i. Moment of force at O (clockwise)
= 2 N × 1
= 2 N m
ii. Moment of force at A (clockwise)
= 2 N × 2m
= 4 N m
APPEARS IN
संबंधित प्रश्न
A force is applied on (i) a non-rigid body and (ii) a rigid body. How does the effect of the force differ in the above two cases?
The moment of a force of 25 N about a point is 2.5 N m. Find the perpendicular distance of force from that point.
Two forces each of magnitude 10 N act vertically upwards and downwards respectively at the two ends A and B of a uniform rod of length 4 m which is pivoted at its midpoint O as shown in the figure. Determine the magnitude of the resultant moment of forces about the pivot O.
Classify the following amongst contact and non-contact forces.
gravitation force
Give an example for each of the following uses of a machine:
to change the point of application of force
State one factor on which the magnitude of a non-contact force depends. How does the magnitude of a non-contact force change along with distance?
How does the distance of separation between two bodies affect the magnitude of the non-contact force between them?
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.
