Advertisements
Advertisements
प्रश्न
What is the weight of a body placed at the centre of the earth?
Advertisements
उत्तर
Weight of the body at the centre of the earth is zero, since g is zero.
APPEARS IN
संबंधित प्रश्न
At which point is the centre of gravity situated in a circular lamina?
The figure shows three pieces of cardboard of uniform thickness cut into three different shapes. On each diagram draw two lines to indicate the position of the centre of gravity G.
Following Fig shows piece of cardboard of uniform thickness cut into different shapes. Draw two lines to indicate the position of centre of gravity G.
Following Fig shows piece of cardboard of uniform thickness cut into different shapes. Draw two lines to indicate the position of centre of gravity G.
Give scientific reason for the following:
In a doubled decker bus passengers are not allowed to stand in the upper deck.
Explain the term ‘centre of gravity’ of a body.
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)
A metal sphere is hanging from the ceiling of a vehicle. If the vehicle is moving along the horizontal road with uniform acceleration 'a' then the suspended thread of the sphere gets inclined to the vertical at an angle 'θ'. The value of acceleration 'a' is (g = acceleration due to gravity) ______.
In a uniform gravitational field on Earth, the Centre of Gravity and Centre of Mass are ______.
