Observing electrostatic forces : Take a balloon. Inflate it and tie up

1.	Observing electrostatic forces : Take a balloon. Inflate it and tie up the open end. Now cut a paper into small pieces and place them on floor. Rub the balloon with a paper and using the balloon near the pieces of the paper. a) Are the bits of paper pulled towards the balloon?a) Why does a stone thrown up into the sky fall back to the earth?b) Why do the rivers flow down to the sea?c) How does the earth hold the atmosphere?d) Is there any force pulling the objects towards earth?e) Where does gravitational force exists?
Answer» a) Due to gravitational pull. b) Due to gravitational force exerted by earth. c) Due to gravitational force exerted by earth. d) The force exerted by earth is gravitational force. e) The gravitational force exists everywhere in the universe between the objects having masses.

Observing electrostatic forces : Take a balloon. Inflate it and tie up the open end. Now cut a paper into small pieces and place them on floor. Rub the balloon with a paper and using the balloon near the pieces of the paper. a) Are the bits of paper pulled towards the balloon?a) Why does a stone thrown up into the sky fall back to the earth?b) Why do the rivers flow down to the sea?c) How does the earth hold the atmosphere?d) Is there any force pulling the objects towards earth?e) Where does gravitational force exists?

Answer»

a) Due to gravitational pull.

b) Due to gravitational force exerted by earth.

c) Due to gravitational force exerted by earth.

d) The force exerted by earth is gravitational force.

e) The gravitational force exists everywhere in the universe between the objects having masses.