Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Ruby negi
yeah ,here the mass of bottle is light and also area is large so more force acts on it. but if you fill the bottle with water, sand then it will not move, while in case of cap,the area of cap is small so less force acts on it...
explaination