Advertisements
Advertisements
Question
Explain the following :
When a corridor train suddenly starts , the sliding doors of some compartments may open .
Solution
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
RELATED QUESTIONS
Why is it advised to tie any luggage kept on the roof of a bus with a rope?
What name is given to the product of mass and velocity of a body ?
Why do the passengers in a bus tend to fall backward when it starts suddenly ?
Name the two kinds of inertia.
Give one example of each of the following :
(a) inertia of rest, and (b) inertia of motion .
Define force.
Explain the following:
Why does a pillion rider fall forward, when the driver of a two-wheeler suddenly applies the brakes?
Passengers lean forward when a sudden brake is applied in a moving vehicle. This can be explained by ________.
Assertion & Reasoning
- Assertion: The value of ‘g’ decreases as height and depth increase from the surface of the Earth.
- Reason: ‘g’ depends on the mass of the object and the Earth.
What are the types of inertia? Give an example for each type.
