Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

salini

Boy and girl sailing on a boat(the boat mass is:25 kg), the boy mass is: 95kg and mass of the girl is smaller from boy When the boat was at rest in quiet water the boy ang girl exchanged their place. Both were symmetrically about the center of the boat and the distance between them was 3.0 m After they switched place the guy saw thet boat moved at 40cm relation to log which was beside of the boat, What is a girl's mass?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. hosein
    Best Response
    You've already chosen the best response.
    Medals 0

    Hi you can solve this by relation of displacement center of mass

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

    sum of moments of masses about the centre of mass is equal to zero. you can use this concept

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

    i am not able to understand that 40cm displacement part does the entire boat get displaced in the horizontal direction by 40cm they interchanging the places changes the com but how does the 40cm move inthe horizontal plane account for it?

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

    how can we relate the two?

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

    |dw:1333300411963:dw| |dw:1333300529345:dw| Let the mass of the girl be M;here no external force is present,hence the centre of mass of the system be conserve: (C.O.Mass)initial=(C.O.Mass)final 95*(-1.5)+25*0+M*(1.5)=95*(0.4-1.5)+25*0.4+M(0.4+1.5) find the M which give you the mass of the girl...

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

    that is nice the co-ordinates of my chosen origin change but not the com thank u all for ur responses

    • 2 years ago
    • Attachments:

See more questions >>>

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.