a standing wave of time period T is set up in a string clamped between two rigid supports. at t=0 antinode is at its maximum diaplacement 2A. at what time will the energy of antinode be equal to that of a node? what i know is... that node has zero amplitude..n antinode has maximum amplitude. and that the maximum potential energy= 1/2*ρ*ω2A2. which also equals the kinetic energy.. moreover it can be seen that the amplitude of the given wave is 2A. T=2∏/ω. but i am unable to relate the above information in order to solve the given query. please tell me how can i find the energy of an antinode and a node? i am very weak in physics... please guide me through it.