What is the tension and velocity in a rope attached to a moving space station?

In summary, the tension in the rope is FT=m(g+a), where 'a' is the acceleration of the space station.
  • #1
elf197320501
5
0

Homework Statement


You're attached to a space station moving at 25000 km/h at a distance of 500 km above Earth by a rope connected to a jetpack(force 3N). Your mass is 60kg. Using the jetpack you move to the maximum extension of the rope (6m) and activate the jetpack for 3s perpendicular to the rope. What is the tension in the rope and your velocity with respect to the point of attachment on the station?

Homework Equations

The Attempt at a Solution


I know that the equation for tension is FT=m(g+a) but I'm not sure about which acceleration to use (acceleration of the space station a=v^2/r where 'v' is 25000km/h and 'r' is 500km+distance from earth, or whether to find the acceleration by v=d/t & a=v/t where 'd' is the max extension of the rope and 't'=3s) and I'm not really sure about the velocity with respect to the point of attachment (would it just be v=d/t?)

Any help would be greatly appreciated
 
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  • #2
This problem seems to be lacking information. Yes, you move to the maximum extension of the rope, but in what direction relative to the center of the Earth?
 
  • #3
elf197320501 said:
the equation for tension is FT=m(g+a)
That is not general enough to be worth remembering. It only applies for a vertical acceleration. Never memorise a formula if you do not also memorise the circumstances in which it applies.
In the present problem, you have been given all sorts of largely irrelevant detail. E.g., for a completely accurate answer you would need to know the mass of the space station, but you do not. Much that is given is of lesser relevance. Your first challenge is to figure out what matters.
Please post some thoughts on that.
 
Last edited:
  • #4
+1

The problem may well be easier than you think.
 

1. What is tension and velocity problem?

Tension and velocity problem is a type of physics problem that involves the relationship between the tension in a string or rope and the velocity of an object attached to it. It is a common topic in introductory physics courses and is used to demonstrate the application of Newton's laws of motion.

2. How do I solve a tension and velocity problem?

To solve a tension and velocity problem, you first need to identify the forces acting on the object, including the tension in the string and the weight of the object. Then, you can use Newton's second law of motion (F = ma) to set up and solve equations for the acceleration and velocity of the object.

3. What are some common examples of tension and velocity problems?

Some common examples of tension and velocity problems include a mass attached to a string swinging back and forth, a block being pulled up a ramp by a rope, and a pendulum swinging from side to side. These problems can also involve variations such as changing the length or angle of the string, or adding friction into the equation.

4. What are the units for tension and velocity?

The units for tension are typically newtons (N), while the units for velocity are typically meters per second (m/s). However, it is important to check the given units in each problem and convert them if necessary to ensure that all units are consistent in the final calculations.

5. What are some tips for solving tension and velocity problems?

One tip for solving tension and velocity problems is to draw a free body diagram to visualize the forces acting on the object. This can help you identify all of the relevant variables and set up the necessary equations. Additionally, it is important to carefully label and keep track of units throughout the problem, and to double check your calculations for accuracy.

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