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प्रश्न
Which one of the following forces is a contact force?
पर्याय
Force of gravity
Force of friction
Magnetic force
Electrostatic force
उत्तर
Force of friction
Explanation -
Force of friction is a contact force. It always acts when the bodies are in contact.
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संबंधित प्रश्न
An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target. Based on this information fill up the gap in the following statement using the following terms.
The type of force responsible for a change in the state of motion of the arrow is an example of a ______ force.
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A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad.
Match the following:
| Group ‘A’ | Group ‘B’ | ||
| (i) | An ox pulling a cart | (a) | Magnetic force |
| (ii) | Lifting a heavy iron object with a crane | (b) | Electrostatic force |
| (iii) | Weighing with a spring balance | (c) | Muscular force |
| (iv) | Applying brakes to a bicycle | (d) | Gravitational force |
| (v) | Picking up pieces of paper with a plastic scale | (e) | Frictional force |
Explain in your own words and give one example.
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