zigya tab

A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad.


The two forces acting on the rocket are :-

1. Gravitational force which is acting vertically downwards
2. Frictional force due to the air. 

1518 Views

Advertisement

When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to :

  • Pressure of water

  • Gravity of the earth

  • Shape of rubber bulb

  • Atmospheric pressure


D.

Atmospheric pressure

691 Views

Advertisement

Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.


The bucket is help up by the action of muscles in our body in the upward direction and force of gravity acting downwards. The force resulting due to the action of muscles in our body is known as muscular force. 
Thus, the bucket is held in position by the action of upward and downward force. 

The forces do not bring the change in its state of motion because they are acting in opposite direction with equal magnitude. Hence, bucket stays in the same position. 

650 Views

Advertisement