Recent content by hang

thank you so much, you are right. My approximation was wrong. And I also realized that I forgot to square the rotational speed in the equation. I really appreciate your help

I approximated sin(theta) as theta ; and cos(theta) as 1. So shouldn't the sin^2 (theta) become (theta)^2 ? So is my assumption for the energy correct? maximum rotational speed happens when potential energy is 0 thank you

this is my working, sorry for the mess

thank you so much

The question ask to find torque about the pivot point S. I first find the torque due to gravity of the plate and then torque due to spring force. I understand that the weight of the rod do no torque as it is acting on the pivot S. Where have I gone wrong?