Advertisements
Advertisements
प्रश्न
Give scientific reason for the following:
In a doubled decker bus passengers are not allowed to stand in the upper deck.
उत्तर
Passengers are usually advised not to stand in the upper deck of the double deck bus. When the passengers are standing, the C.G. rises. This decreases the stability of the bus. When the passengers are sitting, the C.G. gets lowered and stability of the bus increases.
APPEARS IN
संबंधित प्रश्न
What is the weight of a body placed at the centre of the earth?
At which point is the centre of gravity situated in a triangular lamina?
'The position of the centre of gravity of a body remains unchanged even when the body is deformed'.
Explain why One leans forward while climbing up a hill.
Explain why a tight rope-walker, often holds a long pole in his hands when in action.
A boy of mass 40 kg runs up a height of 30 steps, each 20 cm high. Find:
(i) The force of gravity acting on the boy.
(ii) The work done by the boy against gravity. (Take g = 9.8 ms−2)
Answer the following question.
Why do we need to know the center of mass of an object? For which objects, its position may differ from that of the center of gravity?
What is centre of gravity ?
