State Newton's third law of motion. Give two examples.
(N/A) Newton's third law of motion states that to every action,there is an equal and opposite reaction.
Examples are:
$(i)$ When we exert a force (action) on a wall by pushing it with the palm of our hand,we experience a force (reaction) exerted by the wall on our palm.
$(ii)$ When a bullet is fired from a gun,the recoil of the gun is the reaction produced by the bullet on the gun.
Examples are:
$(i)$ When we exert a force (action) on a wall by pushing it with the palm of our hand,we experience a force (reaction) exerted by the wall on our palm.
$(ii)$ When a bullet is fired from a gun,the recoil of the gun is the reaction produced by the bullet on the gun.
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Similar Questions
Explain the following:
$(i)$ Why does a boatman push the river bank backward with a long bamboo pole when launching his boat into the water?
$(ii)$ Why does a boat tend to leave the shore when passengers are alighting from it? How does the boatman overcome this difficulty?
$(iii)$ Why does a gun recoil when fired?
$(iv)$ How do rockets operate in space?
$(i)$ Why does a boatman push the river bank backward with a long bamboo pole when launching his boat into the water?
$(ii)$ Why does a boat tend to leave the shore when passengers are alighting from it? How does the boatman overcome this difficulty?
$(iii)$ Why does a gun recoil when fired?
$(iv)$ How do rockets operate in space?
Medium
View SolutionIn the following table,the mass and speed of two bodies are given. Which body has more momentum? Justify your answer.
Body Mass $(kg)$ Speed $(m s^{-1})$ $A$ $1$ $10$ $B$ $2$ $9$
| Body | Mass $(kg)$ | Speed $(m s^{-1})$ |
| $A$ | $1$ | $10$ |
| $B$ | $2$ | $9$ |
Medium
View SolutionWhat are the changes possible on an object at rest if we apply on it:
$(a)$ a balanced force?
$(b)$ an unbalanced force?
$(a)$ a balanced force?
$(b)$ an unbalanced force?
Medium
View Solution$A$ truck starts from rest and rolls down a hill with constant acceleration. It travels a distance of $400 \, m$ in $20 \, s$. Find its acceleration. Find the force acting on it, if its mass is $7$ metric tons.
Difficult
View SolutionIn the following cases,identify the direction of the net force acting on the objects:
$(a)$ $A$ car drives around a circular race track at a constant speed.
$(b)$ Earth moving around the sun.
$(c)$ $A$ ball,rolling across a grassy field,slowly comes to a stop.
$(a)$ $A$ car drives around a circular race track at a constant speed.
$(b)$ Earth moving around the sun.
$(c)$ $A$ ball,rolling across a grassy field,slowly comes to a stop.
Medium
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