Q8 of 10 Page 143

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.

In this case, muscular force is acting in an upward direction and the force of gravity is acting in a downward direction.


Both forces are acting in opposite directions to each other and hence nullify the effect of each other. Due to this, there is no change in the state of motion of the bucket.


More from this chapter

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6

A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron?

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An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?

 9

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

 10

When we press the bulb of a dropper with its nozzle kept in water, the 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 the pressure of water.

a) the gravity of the earth.


b) the shape of rubber bulb


c) atmospheric pressure