Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ashna

  • 2 years ago

How much work is done by a coolie walking on a horizontal platform with a load on his head ? justify .

  • This Question is Closed
  1. akash123
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    zero

  2. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    can yu explain ?

  3. akash123
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1348894242952:dw|

  4. akash123
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    N is the force applied by coolie on the load...right?

  5. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

  6. akash123
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1348894348026:dw|

  7. akash123
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now...definition of work= F . (Displacement) it's a dot product....right?

  8. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    right

  9. akash123
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1348894463777:dw|

  10. akash123
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    work done by coolie = N *( displacement) * cos 90'

  11. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes 0 , okay ty :)

  12. akash123
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    :)

  13. sam291
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    But if he wasn't exerting a force with the help of friction, on the platform, in the opposite direction from where he's going, then he wouldn't move forward. And the force in the opposite direction caused by friction will be greater because of the load on his head. Am I wrong?

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

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.