Learning Goal: To practice Problem-SolvingStrategy 7.2 Conservation of energy wi

Question

Learning Goal: To practice Problem-SolvingStrategy 7.2 Conservation of energy with conservative forces.

Problem-Solving Strategy 7.2 Conservation of energy with conservativeforces

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REFLECT

The spring is initially unstretched. After the brick has been placed in the basket,the spring is stretched. When the brick is first placed into the basket,it has zero velocity. When the brick has stretched the spring to itsfull extent, it has zero velocity. The brick’s final position is lower thanits initial position.

Explanation / Answer

Red means correct The spring is initially unstretched. After the brick has been placed in the basket,the spring is stretched. When the brick is first placed into the basket,it has zero velocity. When the brick has stretched the spring to itsfull extent, it has zero velocity. The brick’s final position is lower thanits initial position. Yes, they are all correct. for the two that u did not choose. After you place the brick, the spring is immediately experienced aforce mg downward and F = kx, so the spring will be stretched. The second one is basically same as the one above, the initialposition of the spring is 0 ( unstretched) and with F = mg = kx, there will definitely be displacement with thespring Hope this helps, let me know if u still have questions

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