A student is trying to lift a metal ball off the floor. The student is unable to lift the ball after several tries. Which of the following forces is most likely opposing lifting the ball?
possible 1. Electric force
2. Frictional force
3. Gravitational force
4. Magnetic force
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Ответ:
i think it is three
Explanation:
it is a meatal ball soits going to be heavy and if it was 1 than his hands would be electricuted and its a meatal ball so if it is stationar than it should have no friction and if it had magnetic force aplied than it would be roling
Ответ: