- #1
andrewdickson
- 1
- 0
Hi All...
This is my first time, be gentle.
It was a long time ago that I studied stage 1 physics during my biochemistry degree (yes, I know biochemistry was a cop-out) and I am having trouble figuring out a way to express the energy requirements for different body weight runners. Basically someone quoted F=MA to me to describe why a man weighing 90kgs running at a constant speed of 4m/s would require more force than a man weighing 60kgs also running at a constant speed of 4m/s. Now I know that it is obvious that the bigger bloke must exert more force but it seems that F=MA is not the formula to show this. What I really want to do is work out the relationship between body weight and force required to move that body weight at a constant speed.
Any ideas?
Thanks all,
Andrew (from New Zealand)
This is my first time, be gentle.
It was a long time ago that I studied stage 1 physics during my biochemistry degree (yes, I know biochemistry was a cop-out) and I am having trouble figuring out a way to express the energy requirements for different body weight runners. Basically someone quoted F=MA to me to describe why a man weighing 90kgs running at a constant speed of 4m/s would require more force than a man weighing 60kgs also running at a constant speed of 4m/s. Now I know that it is obvious that the bigger bloke must exert more force but it seems that F=MA is not the formula to show this. What I really want to do is work out the relationship between body weight and force required to move that body weight at a constant speed.
Any ideas?
Thanks all,
Andrew (from New Zealand)