(a) Give reason:
i. A coin falls to the ground when it slips off your hand.
ii. We know that there is a huge amount of atmospheric pressure on us. But we do not experience its effect.
(b) Two rods: A and B, having same weight and equal length have different thickness. Rod A is thinner while Rod B is thicker. They are held vertically on the surface of sand. Which one of them will sink more? Why?
(c) Identify the force in the following actions and group them under contact or non- contact force:
i. We lift a book lying on a table.
ii. Movement of needles in a compass to find directions.
Dear Student,
The solution to your (b) query has/have been provided below:
(b) Pressure = Force/Area
As area of thin rod will be less than area of broad rod therefore it will apply more pressure on sand and hence will sink more.
So rod A will sink more and rod B will sink less.
For remaining queries, we request you to post them in separate threads to have rapid assistance
from our experts.
Regards
The solution to your (b) query has/have been provided below:
(b) Pressure = Force/Area
As area of thin rod will be less than area of broad rod therefore it will apply more pressure on sand and hence will sink more.
So rod A will sink more and rod B will sink less.
For remaining queries, we request you to post them in separate threads to have rapid assistance
from our experts.
Regards