PH physics boffins please help me

[RB Will]

Its more for my own curiosity than anything else but I just dont know which sums to do to work it out.

roughly how much energy would it take to shift my mass around a run I did recently?

will have to ignore things like frontal area and drag as I have no idea on the figures.

use weight as 95kg
distance as 16.25km the route also involves 500metres of hill climbing but the start and finish is in the same place so would that be evened out by the downhills?

time taken lets say 95 mins.

Secondly how much energy would be spent if the weight was only 70kg?

Thirdly how fast would the course be completed in theory if I were to use the same amount of energy as the original question but only weighed 70kg.


lastly how much energy would it take to make a 95kg person complete the course in 72 mins? and how much energy for a 63kg person to do same.

Thanks for any help

[RB Will]

could it be simplified to say just moving a mass rather than a body over that course?

[RB Will]

hmm this is a bit more complicated than I first thought then.

Garmin software thinks about 1250 calories burned for a fit bloke running it in 71mins

[RB Will]

how about if we super simplify and forget about running and just say power/energy to move the weights in the times over the distance, even if the actual figures are way off then maybe at least the percentage differences can be used with a roughly known calorie count to extrapolate

[RB Will]

anonymous said:

[redacted]

No need to get all high n mighty about it, I have read every post here and anyway how do I butt into my own bloody thread!

The quoted question had not been answered by yourself. You merely told me that simplifying it would not give me the answer I was after at the time. You didnt give figures for the theoretical situation you described.

There must be an answer for [Energy used to move an object (lets say a cylinder 1.8m tall and 40cm diameter) of x mass over x distance in x time, through air. Forget about ground and muscle friction etc]

[RB Will]

Now who isnt reading?

I said moving the object through air, so there is some resistance.