Your weight is 500 N and you are standing still on the ground. Choose the correct statement/s.
I. You apply a force of 500 N on the ground in downward direction
II. Ground applies a force of 500 N on you in upward direction
A. Only I
B. Only II
C. Both I and II
D. None
Answers
Answer:
Explanation:
Whenever one body exerts a force on a second body, the first body experiences a force that is equal in magnitude and opposite in direction to the force that it exerts. Mathematically, if a body A exerts a force
→
F
on body B, then B simultaneously exerts a force
−
→
F
on A, or in vector equation form,
→
F
AB
=
−
→
F
BA
.
Newton’s third law represents a certain symmetry in nature: Forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself. We sometimes refer to this law loosely as “action-reaction,” where the force exerted is the action and the force experienced as a consequence is the reaction. Newton’s third law has practical uses in analyzing the origin of forces and understanding which forces are external to a system.
Answer:
Option C ) Both 1 and 2 are correct
Explanation:
When you're standing on the ground, you apply a force F which is equal to mass times gravitational force for the place in the downward direction. At the same time, the ground exerts an equal and opposite Normal reaction on your feet in the upward direction.