Advertisements
Advertisements
प्रश्न
What do you understand by the terms “balanced forces” and “unbalanced forces” ? Explain with examples.
Advertisements
उत्तर
Balanced forces : If the resultant of all the forces acting on a body is zero, the forces are called balanced forces.
Example: When we push a concrete wall with our hands the wall doesn't move. This is because the force by us is balanced by the other forces acting on the wall.
Unbalanced force : If the resultant of all the forces acting on a body is not zero, the forces are called unbalanced force.
Example: If we push a toy car lying on the ground, we find that the toy car starts moving. This is because the force exerted by our hand is not balanced by the other forces acting on the toy car.
APPEARS IN
संबंधित प्रश्न
An object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity? If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no, provide a reason.
What is the usual name of the forces which cannot produce motion in a body but only change its shape ?
Fill in the following blank with suitable word:
When a running car stops suddenly, the passengers are jerked …………………..
Explain why, it is dangerous to jump out of a moving bus.
Give one example where a force stops a moving body.
Give one example where a force changes the shape (and size) of a body.
Why are road accidents at high speeds very much worse than road accidents at low speeds ?

When we talk of a force acting on a body, it usually means :
A boy of mass 50 kg standing on ground exerts a force of 500 N on the ground. The force exerted by the ground on the boy will be :
The SI unit of force is ______.
