Advertisements
Advertisements
प्रश्न
What is Gravitational force? Give gravitational units of force.
Advertisements
उत्तर
Earth exerts a force of attraction on each object. This force is due to gravity and its magnitude is directly proportional to the mass of the object. This force is known as gravitational force and its units are gravitational units.
In the MKS system, the gravitational unit of force is kilogramme force i.e., kgf. In CGS system it is gramme force, gf.
संबंधित प्रश्न
Explain the motion of a planet around the Sun in a circular path.
What is the weight of a body placed at the centre of the earth?
Explain how you will determine experimentally the position of the centre of gravity for a triangular lamina (or a triangular piece of cardboard).
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.
Fig. shows the dimensions of an acute angled triangle. By geometrical construction mark the C.G. of the triangle.
Give scientific reason for the following:
In a doubled decker bus passengers are not allowed to stand in the upper deck.
Explain why a tight rope-walker, often holds a long pole in his hands when in action.
Explain why Standing passengers are not allowed on the upper deck of a double-decker bus.
To find the Centre of Gravity of a laminar (2D) object, how many orientations should you suspend it from?
