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प्रश्न
उत्तर
संबंधित प्रश्न
Explain the motion of a planet around the Sun in a circular path.
Where is the centre of gravity of a uniform ring situated?
A square cardboard is suspended by passing a pin through a narrow hole at its one corner. Draw a diagram to show its rest position. In the diagram, mark the point of suspension by the letter S and the centre of gravity by the letter 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:
It is easier to push a boy standing on one leg than on both legs.
State two methods of increasing the stability of the 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)
Write about the experiment to find the centre of gravity of the irregularly shaped plate.
