Advertisements
Advertisements
प्रश्न
Explain the following :
When a corridor train suddenly starts , the sliding doors of some compartments may open .
Advertisements
उत्तर
The frame of the sliding door being in contact with the floor of the train also comes in motion on start of the train, but the sliding door remains in its position due to inertia. Thus, the frame moves ahead with the train, while the door slides opposite to the direction of motion of the train. Thus, the door may shut or open accordingly.
APPEARS IN
संबंधित प्रश्न
Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.
A water tanker filled up to `2/3` of its tank with water is running at a uniform speed. When the brakes are suddenly applied, the water in its tank would
The physical quantity which makes it easier to accelerate a small car than a large car is measured in the unit of :
A Honda City car, a Maruti Alto car, A Tata Nano car and a Mahindra Scorpio car, all are running at the same speed of 50 m/s under identical conditions. If all these cars are hit from behind with the same force and they continue to move forward, the maximum acceleration will be produced in :
Why does a coin, placed on a card, drop into the tumbler when the card is rapidly flicked with a finger?
Explain the following :
It is advantageous to run before taking a long jump .
Give two examples of inertia kinds.
Explain the following:
Why does dust fly off, when a carpet is hit with a stick?
Passengers lean forward when a sudden brake is applied in a moving vehicle. This can be explained by ________.
A heavy truck and bike are moving with the same kinetic energy. If the mass of the truck is four times that of the bike, then calculate the ratio of their momenta. (Ratio of momenta = 2:1)
