Most Important Selected Qs for JEE AdvancedPhysicsOscillations
Paragraph: A cube made of wood having specific gravity 0.4 and side length a is floated in a large tank full of water. Question: If the cube is depressed slightly, it executes SHM from it's position. What is it's time period?
Options
- A2 a g
- B2 5 a 2 g
- C2 2 a 5 g
- D4 5 a g
Correct answer
C. 2 2 a 5 g
Step-by-step solution
aligned & mg = F _ b & a ^3 0.4 ~g = a ^2 ~h ~g & ~h = 2 5 a & m = a ^3 0.4 & ~F _ net = a ^2 x ~g & ~T =2 a ^3 0.4 a ^2 g ~T =2 2 a 5 ~g aligned