Advertisements
Advertisements
प्रश्न
State two effects of a force when applied on a body.
Advertisements
उत्तर १
Two effects of applied force:
- It can change the state of body.
i.e. It can stop a moving object and also a force can move a stationary object. - A force can change the shape (and size) of an object.
उत्तर २
-
Change in Motion:
- A force can make a stationary body move or change the speed and direction of a moving body.
- Example: Pushing a stationary car causes it to start moving.
-
Change in Shape or Size:
- A force can deform an object, altering its shape or size.
- Example: Squeezing a rubber ball changes its shape temporarily.
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?
What is thrust?
The moment of a force about axis depends ______.
The diagram shows two forces F1 = 5 N and F2 = 3N acting at point A and B of a rod pivoted at a point O, such that OA = 2m and OB = 4m
Calculate:
- Moment of force F1 about O
- Moment of force F2 about O
- Total moment of the two forces about O.
Explain the motion of a planet around the sun in a circular path.
Define couple.
A wheel of diameter 3 m is shown in fig. 2 with axle at 0. A force F = 8 N is applied at Q in the direction shown in figure. Calculate the moment of force about:
(i) centre o, and
(ii) point p.
State whether the moment of force is a scalar or vector quantity?
The diagram shows a uniform metre rule weighing 100gf, pivoted at its centre O. Two weights 150gf and 250gf hang from the point A and B respectively of the metre rule such that OA = 40 cm and OB = 20 cm. Calculate :
the difference of anticlockwise and clockwise moment
A uniform metre rule rests horizontally on a knife-edge at the 60 cm mark when a mass of 10 gram is suspended from one end. At which end must this mass be suspended? What is the mass of the rule?
