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प्रश्न
Which of the following is a contact force:
पर्याय
Electrostatic force
Gravitational force
Frictional force
Magnetic force
उत्तर
Frictional force is a contact force.
APPEARS IN
संबंधित प्रश्न
Make a match
| A group | B group |
| 1. Fluid | a. Higher pressure |
| 2. Blunt knife | b. Atmospheric pressure |
| 3. sharp needle | c. Specific gravity |
| 4. Relative density | d. Lower pressure |
| 5. Hecto pascal | e. Same pressure in all directions |
Give one example in each of the following cases where a force:
(i) Stops a moving body.
(ii) Moves a stationary body.
(iii) Changes the size of a body.
(iv) Changes the shape of a body.
The non - contact force is :
Is force needed to keep a moving body in motion?
A car of mass 800 kg, moving at 54 kmh−1 is brought to rest over a distance of 15 m. Find the retarding force developed by the brakes of the car.
Explain the following:
Why do we jerk wet clothes before spreading them on a line?
What is a force?
Gravitational force is a ______ force.
Rocket works on the principle of conservation of
The water sprinkler used for grass lawns begins to rotate as soon as the water is supplied. Explain the principle on which it works.
