Pendulum Conservation of Energy

[spsch]

You need to post a problem. Show your calculations and we can see where you are going wrong. You seem to understand everything so I don't know what it could be!

Hi, so I tried again. I think I'm using the calculator wrong.
When I use √2gΔh = v that still doesn't work out.
But if I use a correct value for v, square it and divide it by 2 I get gΔh. So mgΔh is 1/2mv² after all. I'm so relieved. Sorry for the trouble. And thank you all for helping me!

 

[haruspex]

Hi, so I tried again. I think I'm using the calculator wrong.
When I use √2gΔh = v that still doesn't work out.
But if I use a correct value for v, square it and divide it by 2 I get gΔh. So mgΔh is 1/2mv² after all. I'm so relieved. Sorry for the trouble. And thank you all for helping me!

Sounds like you need to enter it as √(2gΔh).