One or more external forces are exerted on each object enclosed in a dashed
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One or more external forces are exerted on each object enclosed in a dashed box shown in Figure 4.2. Identify the reaction to each of these forces. |
Explanation
https://www.youtube.com/watch?v=fFlgoHcGd0c
Answer
(a) Force exerted by spring on hand, to the left; force exerted by spring on wall, to the right.
(b) Force exerted by wagon on handle, downward to the left. Force exerted by wagon on planet, upward. Force exerted by wagon on ground, downward.
(c) Force exerted by football on player, downward to the right. Force exerted by football on planet, upward.
(d) Force exerted by small-mass object on large-mass object, to the left.
(e) Force exerted by negative charge on positive charge, to the left.
(f) Force exerted by iron on magnet, to the left.
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