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 [...]
Tag: dimensional
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 world’s thinnest material. Sometimes the old gives rise to the new in wonderfully unexpected ways. Such wa...