## Difference between g and G

What is the difference between capital ‘G’ and small ‘g’ in the chapter gravitation?  g  G  Acceleration due to gravity  Universal constant of gravitation  varies from place to place  A constant everywhere on earth  vector quantity  A dimensional constant  unit is ms-2  unit is Nm2kg-2 Incoming search terms:difference between G and Gdifference bet g and Gdifference [...]

## Dimensional Analysis – A solved example

Deduce the dimensional formula for workdone,pressure and density. [posted by boineelo ] Answer: workdone We know that workdone = force x distance Therefore [work done] =  [force] [distance] but force = ma [force]=[m][a] [a]=[velocity]/[t] [velocity]=[displacement]/[t] So, putting all these together [work done]=[m][distance][distance]/[time][time] [work done]=ML2T-2 Similarly, you can work out the dimensional formula for pressure and density as [pressure]=[force]/[area]=ML-1T-2 [...]

## Physics Nobel Prize 2010

Professor Andre Geim and Professor Konstantin Novoselov have been awarded Nobel Prize in Physics (2010) for their pioneering work with the worldâ€™s thinnest material. Sometimes the old gives rise to the new in wonderfully unexpected ways. Such wa...

## Physics doubts from Class XI student

1. How to check the correctness of equation s=u+0.5a(2n-1) using dimensional analysis?(Please describe)

## Questions received from a curious UG student

I have several doubts in physics.Would you like to answer me please?The following are the doubtful questions I have –