Meet the Other Phone. Flexible and made to last.

Meet the Other Phone.
Flexible and made to last.

Buy now

Please or to access all these features

Chat

Join the discussion and chat with other Mumsnetters about everyday life, relationships and parenting.

Can anyone help resolve a physics argument (and prove me right)

27 replies

BillMasen · 06/01/2022 19:46

I’m having a disagreement with my partner

Say there are 2 paths up a hill. One is steep but short, the other long but shallow. Both start at the same point at the bottom and end at the same point at the top

They say that the total energy expended taking the shallow path is less than taking the steeper path. I say it’s the same.

Who is right?

OP posts:
BarbaraofSeville · 06/01/2022 20:57

I'm a physicist of sorts and a hiker and I think it would be the same because you gain the same altitude and you walk further with the shallower path so while it feels easier you're taking more steps.

MindyStClaire · 06/01/2022 21:11

I think this is the problem with the word energy, it means so many different things.

As others have said, the potential energy is the same.

However, the energy you would use (calories burned, how tired you feel etc) will surely depend. Theoretically, it would be possible to have a six foot ladder going more or less vertically up, and a 26 mile path very slowly sloping up six feet from start to end. I know which would tire me out more!

New posts on this thread. Refresh page
Swipe left for the next trending thread