Recent content by Rwindsor1

This is what I meant by I feel there is something else that must be conserved. I know I need another equation, I just don't know what that is.

Apologies, corrected now. And I don't believe there is, but when I tried moments I was always left with one too many variables to solve the equation

Homework Statement Consider the Earth's orbit around the sun orbit as circular. Suppose the sun slowly loses mass from mass M1 to mass M2. Suppose that the initial orbit is R1 and the final orbit is R2. Express R2 in terms of the other parameters. 2. The attempt at a solution The problem I'm...

Ah I see, thanks for clearing that up :)

Okay, here's my two cents... The object starts on the plane with zero kinetic energy and we define the plane to be at a point where the graviational potential energy is zero. When we move the object up to a distance height we must do work against the weight of the object (gravitaitional force)...

The lecturer in my dynamics class defined Newton's First Law to be 'There exists at least one inertial frame with respect to which mass m moves in a straight line with a constant velocity. In this frame no net force acts on m.' This has confused me; I thought inertial frames could not...