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In this image, what must the students' muscles do to pull the rope? photograph of army personnel at a tug of war. two groups are seen at either end of the rope and holding it underarms and their feet firmly held to the ground while pulling the rope in bidirectional way. other personnel are seen watching the sport. a. twitch and tighten b. relax and twitch c. tighten and contract d. contract and relax

2 Answers

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Final answer:

The students' muscles must tighten and contract in order to pull the rope.

Step-by-step explanation:

The students' muscles must tighten and contract in order to pull the rope in a bidirectional way. When the muscles tighten, it creates tension in the tendons, which allows the students to generate force and exert it on the rope. By contracting their muscles, the students are able to apply force to the rope and pull it towards themselves.

User Sob
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Final answer:

In a tug-of-war, students' muscles must tighten and contract to pull on the rope, creating tension that is countered by the opposing team's force. These muscle actions are the same as those used in arm-wrestling, another sport dependent on muscle contractions against an opposing force.

Step-by-step explanation:

The correct answer to the student's question is c. tighten and contract. In a scenario like a tug-of-war, students' muscles must perform these actions to pull the rope effectively. During the tug-of-war, muscles undergo isometric contractions, where the muscles are activated but do not significantly change length. In this case, the muscle fibers tighten, which is the initial engagement and stiffening of the muscles, and then they contract, where the muscle fibers actively generate force against resistance in an attempt to shorten. This contraction opposes the counterforce exerted by the opposing team.

It is essential to understand that tension in ropes during tug-of-war represents the force that the participants must overcome. The tension in the rope is a result of the force applied by both teams. In the case of arm-wrestling, which relies heavily on muscle contractions, the same principle applies. The repeated actions of tightening and contracting are crucial for both maintaining one's position against the opponent's force and for attempting to overcome the opponent's resistance in both sports.

User Laya
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