Mass & Gravity Class Exercises Help

Daniel Denton
Category:
Physics

Question description

I'm working on a few physics problems to get ready for my exam. But I don't understand how exactly gravity & friction works. Can some one please explain these 2 things and help me with the following questions?

  • 1. You were to carry the bag of apples to the surface of the moon, where the gravitational field is only 1.67 N/kg, how much would the apples weigh? (Do you just replace g? I'm so confused, why does apple weight different on the moon? I thought mass is supposed to be uniform. )
  • 2. On a trip to Mars, you pick up an alien life form that weighs 90 N there. When you bring it back to Earth, you find that it weighs 238 N on Earth. How much mass does the alien have? How strong is the gravitational field on the surface of Mars
  • 3. After creating a 50 kg ceramic sculpture, Blake needs to drag it across the concrete floor to the corner of the room. He finds that he needs to pull with more than 220 N of force to get it to slide. What is the coefficient of friction between the ceramic and concrete?
  • 4. band of Viking warriors drags their 1500 kg boat across the beach to set out to sea. They find that they have to push with more than 8800 N of force to slide it across the beach. What is the coefficient of friction between the boat and the sand?
  • Tutor Answer

    (Top Tutor) Muhammad A82
    (205)
    School: Rice University
    Work in Progress
    The tutor is currently answering this question.
    Please check back later.
    Ask your homework questions. Receive quality answers!

    Type your question here (or upload an image)

    1823 tutors are online

    Brown University





    1271 Tutors

    California Institute of Technology




    2131 Tutors

    Carnegie Mellon University




    982 Tutors

    Columbia University





    1256 Tutors

    Dartmouth University





    2113 Tutors

    Emory University





    2279 Tutors

    Harvard University





    599 Tutors

    Massachusetts Institute of Technology



    2319 Tutors

    New York University





    1645 Tutors

    Notre Dam University





    1911 Tutors

    Oklahoma University





    2122 Tutors

    Pennsylvania State University





    932 Tutors

    Princeton University





    1211 Tutors

    Stanford University





    983 Tutors

    University of California





    1282 Tutors

    Oxford University





    123 Tutors

    Yale University





    2325 Tutors