Physics
During the annual sports day, a game of tug of war was held. The two teams pulled the rope in opposite directions. Although the rope did not move initially for two minutes, both teams felt a strong pulling force.
(a) Why did both teams feel a pull?
(b) Which law of motion comes into play in the above situation?
(c) Name the forces acting in this situation.
(d) State two other examples of this force.
Laws of Motion
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Answer
(a) Both teams felt a pull because when a team pulls the rope, the rope pulls the team back with an equal and opposite force. Since both teams pulled equally in opposite directions, the rope did not move initially.
(b) This situation illustrates Newton's Third Law of Motion.
(c) The forces acting in this situation are the action force (pull exerted by one team on the rope) and the reaction force (pull exerted by the rope on the team in the opposite direction).
(d) Two other examples of this force are:
- Walking on the ground—our feet push the ground backward and the ground pushes us forward.
- Recoil of a gun—when a bullet is fired forward, the gun moves backward.
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