Force class 11
Force class 11
A force is a push or pull that changes the state of a body, its position, and the direction of motion of a body.
A force is needed to change an object’s state of motion.
Force is a vector quantity.
SI Unit of force is newton(N).
Net force: If number of forces are acting on a body then their resultant is known as net force.
Question 1:
A body is acted upon by number of external force. can it remain at rest?
Ans: yes, if number of balance forces acting on it so that there resultant force is equal to zero.
Question 2:
If the net force acting on a body be zero, will the body remain necessarily in rest position ? explain.
Ans: No, when the net force acting on a body is zero, the body may be in a state of uniform motion along a straight line or in a resting condition.