A toy car moving at constant speed complete one lap around a circular track (a distance of 300m) in 30.0s.if the mass of a car is 1.5kg,what is the magnitude of the force that keeps it in a circle?

Answer 1

speed=300/30 m/s=10m/s

force=mass*speed^2/radius

where radius= 300/2PI

Answer 2

V=s/t p=2PIr. F=mv² /r
=300/30 =300/2PI. F=(1.5)(10)²/r
V=10m/s. r=47.75m. F=3.14N