The discussion revolves around calculating the power generated by a rollerblader moving at a constant speed while experiencing forces of friction and air resistance. The subject area includes concepts from dynamics and power in physics.
The discussion is active, with participants exploring the relationship between the forces acting on the rollerblader and the concept of net force. There is a recognition of the need to understand the forces involved to determine the power output, and some guidance has been provided regarding the implications of Newton's 2nd law.
Participants are working with the assumption that the rollerblader is moving at a constant speed, which influences their understanding of net force and the forces exerted. There is also a focus on the forces of friction and air resistance, which are known, but the net force is questioned.
TyErd said:well there's the formula p=w/t or p=fv
TyErd said:how do we know net force, we only know friction
TyErd said:so net force is 0?
TyErd said:um..zero?