# physics

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A rope of negligible mass passes over a puley of a negligible mass attached to the ceiling. One end of the rope is held by stdent A of mass 70 kg who is at rest on the floor. The opposite end of the rope is held by student B of mass 60 kg who is suspended at rest above the floor

calculate the magnitude of the force exerted on the floor by student A

I said 700 N and aparently this is wrong and I don\'t see why

• physics -

If this question is asking for the normal force i got 100 n but i\'m not sure that is what it is asking for

• physics -

The suspended student B's weight is balanced by a rope force Mb*g = 588 N. This becomes an upward force on Student A. A is held in equilibrium by ground force Fg (up), rope force (up) and his weight Mb*g (down).
Fg + 588 = Mb*g = 686 N
Fg = 686 - 588 = 98 N

If you are using 10 m/s^2 for g, you'd get 100 N for the answer. I used 9.8.

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The content structure of the passage involves a physics problem where two students, A and B, are connected by a rope over a pulley. Student A is on the floor, and student B is suspended in the air. The problem asks for the force exerted by student A on the floor, and there are multiple attempts to solve it, with a final correct answer provided.
single_question_with_answer
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
system
# physics

posted by .

A rope of negligible mass passes over a puley of a negligible mass attached to the ceiling. One end of the rope is held by stdent A of mass 70 kg who is at rest on the floor. The opposite end of the rope is held by student B of mass 60 kg who is suspended at rest above the floor

calculate the magnitude of the force exerted on the floor by student A

I said 700 N and aparently this is wrong and I don\'t see why

• physics -

If this question is asking for the normal force i got 100 n but i\'m not sure that is what it is asking for

• physics -

The suspended student B's weight is balanced by a rope force Mb*g = 588 N. This becomes an upward force on Student A. A is held in equilibrium by ground force Fg (up), rope force (up) and his weight Mb*g (down).
Fg + 588 = Mb*g = 686 N
Fg = 686 - 588 = 98 N

If you are using 10 m/s^2 for g, you'd get 100 N for the answer. I used 9.8.

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A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, …
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user
The content structure of the passage involves a physics problem where two students, A and B, are connected by a rope over a pulley. Student A is on the floor, and student B is suspended in the air. The problem asks for the force exerted by student A on the floor, and there are multiple attempts to solve it, with a final correct answer provided.

TYPE: SINGLE_QUESTION_WITH_ANSWER