1. The problem statement, all variables and given/known data A spring is used to launch a two 1kg blocks down a ramp from the top. One of the block is stack (fused) on top of the other. If the mass of the blocks were to change, i.e. double (making it 2kg blocks). does this change the displacement of this system? This system also has friction coming from the contact between the block and the ramp. Due to confusion, new way to read it: Basically the block is going down the ramp via a spring launching it. The block and ramp have friction between them. After the block is launched, it will have a displacement due to the work done by the spring and (I assume) gravitation potential energy. Now we swap the blocks out for another heavier one and repeat this procedure. Would the increase of mass have us get a different displacement than using the lighter block. 2. Relevant equations ? 3. The attempt at a solution I was thinking F=ma and that by increasing the mass of the object, the Net Force should increase as well. Therefore the displacement should also increase as there is more force on the blocks. I've also thought about the gravitational potential energy and that it will also increase the displacement if the mass was to change due to more stored energy.