Part A A 0.35 kg block is held in place against the spring by a 70 N horizontal

Question

Part A A 0.35 kg block is held in place against the spring by a 70 N horizontal external force (see the figure) The external force is removed, and the block a projected with a velocity v 1 = 1 1.2 m/s upon separation from the The block descends a ramp, and has a velocity v2 = 2 m/s at the bottom. The track is friction less between points A and B. The block enters a rough section at B, extending to E. The coefficient of kinetic over section is 0.3. The velocity of the block is v3 = 1.4 m/s at C The block moves on to D, where it stops the height h of the ramp is closed to

Explanation / Answer

energy conservation b/w A and B :

.5m*(4-1.44) = mg*h

==> h = 2.56*.5/g = .136 m

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