Q4 of 17 Page 236

Correct the given statement.

The gravitational force of moon is equal to the gravitational force of earth.

The gravitational force on moon is one – sixth of the gravitational force of earth. The gravitational force of a planet depends on its mass, as the mass of Earth is greater than the mass of moon so its gravitational force is also greater.


More from this chapter

All 17 →
2

Fill in the blanks

Friction is a __________ force (contact / non-contact)

 3

Match the following

 5

List out the following actions on the basis of contact force and non contact force

a) lifting a chair


b) the falling of a coconut from the tree


c) friction between the road and the tyre of a car


d) a comb attracts bits of paper


e) attraction between two magnets

 6

By observing the diagram, answer the following.

a) How does the pressure at A differ from the pressure at B.?


b) The pressure at B is greater than the pressure at D. Is it true?. Justify your answer.


c) Compare the pressure at A and C.


d) If the water is replaced with mercury, how would this affect the pressure at A and D?