Recent content by debasish panda

Hello physicists,so i am debasish continuing my 5 year integrated MSc in applied physics from cet,bbsr,india and very much interested to pursue my doctorate from Harvard university,some of my seniors are advising me must to complete my MS degree before i join to Harvard university through gre...

thnx bro...

Why is the D'Alembert's Principle ∑i(Fi−miai)⋅δri=0 stated in terms of "virtual" displacements instead of actual displacements? what does the 'virtual displacement' really means and what is its physical significance??