# Quick power sizing calculation

### From Artisan's Asylum

A quick guestimate of what size motors we'll need *-Aidan*

Assuming a rolling resistance of .015 assuming standard tires on concrete

[[350(kg)*9.8(m/s^2)*.015] * 2*340(m)] =

51.5(N) * 680(m)=

about 35(kJ) of work

We'll do it in about 20 minutes = 30 Watts

This number is low as it does not take into account the energy needed to get the robot moving, stop quickly, or roll over obstacles.

We are going rather slow so we can gear motors down quite nicely