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 is projected with a velocity v1=12 m/s upon separation from the spring The block descends a ramp and has a velocity v2=2 m/s at the bottom. The track is frictionless between points A and B . The block enters a rough section at B, extending to E. The confident of kinetic friction over this 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 ramps is closed to 7.3 17 13 20 19

Explanation / Answer

h = .136 m

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