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Test Refine Energy Device Practice Test
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Q1
Amir built a lifting device that converts electrical energy to motion using a small motor and string. In tests, it lifted 50 grams, but it could not lift 150 grams; the goal was 150 grams. The string also slipped on the spool. Based on the testing, what refinement would help it lift heavier objects?
Amir built a lifting device that converts electrical energy to motion using a small motor and string. In tests, it lifted 50 grams, but it could not lift 150 grams; the goal was 150 grams. The string also slipped on the spool. Based on the testing, what refinement would help it lift heavier objects?