Power (Torque x Rpm) need to move 100kg car to 1.86 MPH/3 KMH in about 3 seconds? Answered
I am planning to build the electric car. But having no experience in physics.
My Electric car have following specification:
-> 4 Wheel Car
-> 100Kg car weight including Person weight
-> Wheel size can be 4-8 inch
I want to move the car on flat road (No incline) to about 3-4KMH / 1.86-2.48MPH in about 3-5 seconds. I want to know that how much power it needs to attain that speed. Also I want to know that how much power it needs to overcome rolling friction in order to move the car.
I have the dc motor of 2kg.cm or 0.2N.M torque and 7k rpm, can I use this motor to attain that speed.
Also please can someone tell me the formula according to my specification so I will alter the wheel size value to calculate the power needed to attain that speed.
Also is the torque of 2kg.cm or 0.2N.M and 7k rpm is enough to move the car or I have to setup the gearing? If have to setup the gearing then can you please tell me the ratio.