Advertisements
Advertisements
Question
Give reason for the following :
When a hanging carpet is beaten with a stick, the dust particles start coming out of it.
Advertisements
Solution
When a hanging carpet is beaten with a stick, the dust particles come out of it because the force of the stick makes the carpet move to-and-fro slightly but the dust particles tend to remain at rest (or stationary) due to their inertia and hence get separated from the carpet.
APPEARS IN
RELATED QUESTIONS
State whether force is a scalar or a vector quantity?
Explain why, it is dangerous to jump out of a moving bus.
Give one example where a force moves a stationary body.
Give one example where a force changes the shape (and size) of a body.
What do you understand by the terms “balanced forces” and “unbalanced forces” ? Explain with examples.
A car is moving on a level road. If the driver turns off the engine of the car, the car’s speed decreases gradually and ultimately it comes to a stop. A student says that two forces act on the car which bring it to a stop. What could these forces be ? Which of these two forces contributes more to slow down and stop the car ?
If we release a magnet held in our hand, it falls to the ground. The force which makes the magnet fall down is an example of :
When a rubber balloon held between the hands is pressed, its shape changes. This happens because :
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 ______.
