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प्रश्न
A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron?
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उत्तर
While making a tool, a blacksmith hits a hot piece of iron with a hammer. The muscular force applied due to the hitting, which is an example of contact force, stretches the piece of iron, causing a change in its shape.
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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.
An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?
Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.
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.
Mechanical force
Why an object thrown upwards comes down after reaching a point?
In what way are we different muscular force and mechanical force?
List out the types of forces on the basis of contact.
Where do we apply a force while walking?
