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Johnny Leong
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Question: Team A and B are competing in a tug-of-war. Team A is winning. Assuming that the mass of the rope is negligible, which of the following statements are correct. Explain your answer.
i. The force exerted by A on B is greater than the force exerted by B on A.
Ans. I think this is right. Because A is winning.
ii. The frictional force exerted by A on the ground is greater than that exerted by B on the ground.
Ans. I think this is not correct. Because not A exerts friction on the ground, the direction should be reversed.
iii. The frictional force exerted by the ground on A is greater than that exerted by the ground on B.
Ans. I think this is correct. Because A exerts more force, the friction exerts on A is also greater.
The rope will break if the force exerted on it is greater than 5000 N. Will the rope break in the tug-of-war if two teams pull on it, each with a force of 3000 N?
Ans. I think the rope will not break. Because the force of each team is still below 5000 N, even they exert 3000 N but they are in different directions. The main point is that the resultant force acted on the rope is still below 5000 N.
Please tell me if my answer is right or not. Thank you for reading.
i. The force exerted by A on B is greater than the force exerted by B on A.
Ans. I think this is right. Because A is winning.
ii. The frictional force exerted by A on the ground is greater than that exerted by B on the ground.
Ans. I think this is not correct. Because not A exerts friction on the ground, the direction should be reversed.
iii. The frictional force exerted by the ground on A is greater than that exerted by the ground on B.
Ans. I think this is correct. Because A exerts more force, the friction exerts on A is also greater.
The rope will break if the force exerted on it is greater than 5000 N. Will the rope break in the tug-of-war if two teams pull on it, each with a force of 3000 N?
Ans. I think the rope will not break. Because the force of each team is still below 5000 N, even they exert 3000 N but they are in different directions. The main point is that the resultant force acted on the rope is still below 5000 N.
Please tell me if my answer is right or not. Thank you for reading.
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