Four situations I. A boy throws a ball up in the air and it falls freely on the ground. II. A horse pulls a cart and the cart moves forward. III. A can is opened with the help of an opener. IV. A magnet is demagnetized by hammering it. In which of the given situations is indirect application of force involved?
Answers
Answered by
20
Explanation:
Gravitational Force because a boys throws ball is go to air and again it is come on land
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Answered by
1
Answer:
The indirect application of force is involved in I. A boy throws a ball up in the air and it falls freely on the ground.
Explanation:
- A ball is thrown upwards with some initial velocity.
- After reaching a maximum height, the velocity becomes zero and the ball starts to fall downwards.
- However, there was no force applied to the ball after reaching the maximum height so that it falls down.
- The force of gravity accelerates the ball downwards.
- Hence, there is an indirect application of force.
Explanation for incorrect options:
II. A horse pulls a cart and the cart moves forward.
The force is applying a force on the cart in order to move it.
III. A can is opened with the help of an opener.
A person applies force on the edge of the opener to open the can.
IV. A magnet is demagnetized by hammering it.
Force is applied to the magnet when a person or machine hammers it.
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