Advertisements
Advertisements
प्रश्न
Give reason for the following :
When a hanging carpet is beaten with a stick, the dust particles start coming out of it.
उत्तर
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
संबंधित प्रश्न
Fill in the following blank with suitable word :
When a stationary car starts suddenly, the passengers are jerked …………………..
Fill in the following blanks with suitable word :
If there were no unbalanced force of……………….. and no…………………. resistance, a moving bicycle would go on moving for ever.
State the various effects of force.
Give one example where a force changes the direction of a moving body.
Give one example where a force changes the shape (and size) of a body.
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 ?
When we talk of a force acting on a body, it usually means :
When a rubber balloon held between the hands is pressed, its shape changes. This happens because :
Which of the following effect cannot be produced by an unbalanced force acting on a body?
The SI unit of force is ______.