Physics exam question?
Hey, I had to answer the following question in the exam: "Can a thread pendulum be used on the ISS?
My answer to this was: "No, a thread pendulum cannot be used because the tension force acts against the general force. In a thread pendulum, both are part of the force; they do not counteract it."
Can the answer be correct?
It is difficult to say whether your answer is correct, as it depends on what is meant exactly in the question and what further information was given in the context of the exam. A thread pendulum is a simple pendulum in which a thread serves as a support rod and the pendulum weight hangs at its lower end. On the ISS, a thread pendulum could be used as long as it is attached to a fixed point and the conditions for the oscillation of the pendulum are fulfilled. However, it could be difficult to use a thread pendulum on the ISS because there is no gravity there and the movements of the pendulum would therefore look very different than on the earth. Whether this was relevant in the exam cannot be said without further information.
Thank you for your detailed answer.
What is a general force?
A pendulum must necessarily have two opposing forces.
The gravity force is already eliminated by the centrifugal force. So there’s only one power left.
general force is m*a
Well, you did. No acceleration/acceleration compensated by circular movement, therefore no force.
As a teacher, I wouldn’t give any points because you say “force” more often without defining what a force you mean. That’s not a real explanation for me, even if you’re probably the right one.
But is my answer right or not? From the explanation.