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MT2 F05 w sln

# MT2 F05 w sln - Problem 2(a A(b A B B x x vo H C v h v(a...

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Problem 2 A B (a) A C B (b) Δ x v o v v H h Δ x (a) Total energy is conserved, since there are no dissipative forces (friction). E A = k Δ x 2 2 and E B = mgH E A = E B = k Δ x 2 2 = mgH = H = k Δ x 2 2 mg (b) The block keeps going up the incline until the wedge and the block reach the same velocity, call it v. When this happens, the block is stationary relative to the wedge. Since there are no dissipative forces, the energy of the system throughout the process is conserved: E A = E B = E C (see Fig. 2). E A = E C = k Δ x 2 2 = mgh + ( m + M ) v 2 2 (1) Also, since there are no external forces acting in the horizontal direction after the block stops interacting with the spring, the horizontal momentum of the system is conserved:

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MT2 F05 w sln - Problem 2(a A(b A B B x x vo H C v h v(a...

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