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Introductory Physics Homework Help
Elastic collision with a spring constant and unknown masses
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[QUOTE="STUDENT vs HOMEWORK, post: 5384188, member: 585695"] [h2]Homework Statement [/h2] A ball of mass m rolls down a 3.0 m ramp inclined at 30° above the horizontal, rolls along a flat, friction less surface, and collides elastically with another ball of mass 2m, initially at rest. The second mass then moves along the surface and collides with a horizontally mounted spring with spring constant k= 200 N/m, compressing it by 0.15 m. What is the value of m? [h2]Homework Equations[/h2] E[SUB]k 1[/SUB] + E[SUB]g 1[/SUB] + E[SUB]e 1[/SUB] = E[SUB]k 2[/SUB] + E[SUB]g 1[/SUB] + E[SUB]e 2[/SUB] For the incline: F[SUB]N[/SUB] + F[SUB]g parallel[/SUB] + F[SUB]g perpendicular[/SUB] + F[SUB]f[/SUB] = m[SUB]1[/SUB]a [h2]The Attempt at a Solution[/h2] I've been working backwards so I started with this: 1/2 m[SUB]2[/SUB]v[SUB]2[/SUB]' [SUP]2[/SUP] = 1/2 kx[SUP]2[/SUP] I ended up with v[SUB]2[/SUB]' = √45/2m and I now have no idea how to continue Any help will be appreciated. [/QUOTE]
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Introductory Physics Homework Help
Elastic collision with a spring constant and unknown masses
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