total initial energy = total final energy
The Attempt at a Solution
what i got
I am unable to obtain (iv). having block B in mid air and i have no height given to me, I cannot input any height for my initial "potential energy = mgh". So i assumed height to be 0 for initial block B and got a height of 0.34m for block A (h= sin 20)...
after trying working out all the values, i got a negative kinetic energy? which is totally wrong!!!
P.S: there is no answer sheet, so i would not know if all my previous answers are correct as well.