Hey everyone just curious to how i would go finding the appropriate power needed
ID: 1859557 • Letter: H
Question
Hey everyone just curious to how i would go finding the appropriate power needed to move a 20-25kg device around. I want it to be roughly walking pace so dont need a large motor or anything like that but could someone help as to find out approximately how much force, torque etc i would need to move it. I just need a push in the general direction i know most physics regarding newtons laws and all that just finding torques and stuff like that im getting a little confused. If anyone could help it would be great.Explanation / Answer
I agree. It's not even worth discussing unless you know the rolling resistance. I always thought my driveway was completely flat, as the previous 6 cars I've owned wouldn't go anywhere if I left them in neutral and were not in gear. When I bought my new truck and tried that, it rolled away. I was like; "Come back here Truck*!" If the rolling resistance hadn't stopped it, I imagine that it would have rolled for miles (given a perfectly flat surface) as I calculate the deceleration at the ~0.5 m/s speed it obtained to be ~0.0001 m/s2 due to aerodynamic drag. ps. Given the vehicle mass of 1600 kg and a velocity of 0.5 m/s, the kinetic energy of the vehicle was about 200 joules, which indicates my driveway had an elevation change of ~ 1/2 inch. If it obtained its velocity over 2 seconds, it might be possible to figure out the equivalent torque required to accelerate the vehicle to that speed on a flat surface.