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  1. K

    Circular Motion of a space station Problem

    Do you mean substituting the values given in the problem into those equations? If I did that, wouldn't I have two unknowns with v and T?
  2. K

    Work and Energy Problem

    Hi, I also need help on this problem: 1. A 384-kg crate hangs from the end of a 11.2 m long rope. You pull horizontally with a varying force to move it a distance d = 5.4 m to the right. a.) What is the magnitude of the applied force F when the crate is at rest in its final position? b.)...
  3. K

    Circular Motion of a space station Problem

    Hi, I was hoping I could get some help on these problems. Here's the first problem: 1. A projected space station consists of a circular tube that is set rotating about its center (like a tubular bicycle tire). The circle formed by the tube has a diameter of about D = 1.30km. What must be the...
  4. K

    Net Force Questions

    Hi, I was hoping someone could help me with some general net force questions that will help me answer some of my problems. For example, if a net force acts on an object, does the object's speed and/or velocity change? Furthermore, is the net force that acts on an object which remains at rest...