Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

amishra

  • 3 years ago

If a mass of 2.0 kg is lifted through a height of 5.0 m, what force does it require to lift it at constant speed?

  • This Question is Closed
  1. Algebraic!
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    mg

  2. apple_pi
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Doesn't matter how high its lifted. The gravitational force experience = mass * acc. due to gravity. To balance this, an equal force in the opposite direction is required. So first calculate the gravitational force

  3. apple_pi
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    @amishra

  4. amishra
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Gravitational force is 9.81 m/s^2 ? If so, Then we just use f=ma like F= 2*9.81 ? Is this correct?

  5. apple_pi
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Wait... your question is what force is needed to keep it stationary or at constant speed. If stationary...do what I told you If constant speed, you need a net force of 0

  6. apple_pi
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    but yeah that's correct

  7. amishra
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Wait, what force is needed to lift the object, assuming that we are moving at constant speed. So the force should come out to be negative right?

  8. apple_pi
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Lift the object at constant speed..? Force is a vector unit so depending on which direction you put it could be pos or neg

  9. amishra
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That's the question :/ Okay, thank you so much! :D

  10. apple_pi
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    sure. anytime

  11. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy