Which of the Following is Wrong about “Action and Reaction pair”
Solution:
Action and Reaction forces cannot cancel each other to have zero resultant because they act on two different bodies
Question 1:
Third Law of Motion
Question 2:
When a horse pulls a cart, the force that helps the horse to move forward is the force exerted by
Solution:
Horse applies force on earth at certain angle. In turn earth apply force on horse horizontal component of this force helps the horse and cart to move forward.
Question 3:
A car accelerates on a horizontal road due to the force exerted by
Solution:
Friction force applied by road on the car act in the direction of the motion which is responsible to move the car.
Question 4:
If a fly collides with the wind shield of a fast moving bus which experiences an impact force with a larger magnitude :
Solution:
From Newton's third law of motion both bus and fly will experience equal force in opposite direction.
Question 5:
In a general debate on topic “normal reaction and mg never form action and reaction pair” a number
of students took part :-
(I) Navneet said – Action and reaction forces should be of same nature
(II) Anand said – Action and reaction forces act on two different bodies here, normal reaction and mg both are acting on the block.
(III) Meenakshi said – Action and Reaction forces balance each other. So, normal reaction and mg should be action and reaction pair.
Mark correct option as your judgement
Solution:
The correct option is:
(II) Anand is correct.
Explanation:
Action and reaction forces act on two different bodies, as per Newton's third law. Normal reaction and gravitational force (mg) both act on the same block, so they cannot form an action-reaction pair.
Question 6:
If action force is gravitational force, then reaction force :