Question

energy and energy transformations test
where is ke transforming into pe?
1
2
3
4

Explanation:

In a pendulum - like system (the setup with balls on strings here), kinetic energy (KE) and potential energy (PE) transform. When a ball moves from the lowest point (where KE is maximum and PE is minimum) towards the highest points (like positions 1, 2, 4, 5), KE is converted into PE. Position 4 is on the upward swing from the lowest point (position 3). At position 3, KE is maximum (as it's the lowest point, least PE, most motion). As the ball moves to 4, it's slowing down (losing KE) and gaining height (gaining PE), so KE is transforming into PE here. Positions 1 and 5 are high points (max PE, min KE, where PE would transform to KE as they swing down), position 2 is also on the upward/downward? Wait, no, looking at the diagram, positions 1 and 5 are the outermost high, 2 and 4 are intermediate high, 3 is low. So when moving from 3 to 4 (or 3 to 2, 3 to 1, 3 to 5), but 4 is on the way to 5? Wait, no, the key is: at the lowest point (3), KE is max. As it moves up (towards 2, 1 or 4, 5), KE decreases, PE increases (since height increases). So positions 1,2,4,5 are higher than 3. But when moving from 3 to 4, it's KE to PE. So the correct position where KE is transforming to PE is when the object is moving upward from the lowest point, so position 4 (and also 2,1,5, but in the options, 4 is the one selected and makes sense as it's on the upward path from 3, converting KE to PE.

Answer:

4 (the position labeled 4, where the ball is moving upward from the lowest point, so kinetic energy is being transformed into potential energy)