Login

Welcome, Guest. Please login or register.

March 28, 2024, 08:36:30 pm

Author Topic: Help please  (Read 768 times)  Share 

0 Members and 1 Guest are viewing this topic.

epherbertson

  • Trailblazer
  • *
  • Posts: 25
  • Respect: 0
Help please
« on: August 08, 2017, 11:51:01 am »
0
It is probably really basic but I am struggling with this question and any help is appreciated.
Question 5.
A point moving with simple harmonic motion has a velocity of 4m/s when passing through the centre of its path and its period is Pi seconds. What is it's velocity when it is 1m from the position in which it's velocity is zero.

Thanks

RuiAce

  • ATAR Notes Lecturer
  • Honorary Moderator
  • Great Wonder of ATAR Notes
  • *******
  • Posts: 8814
  • "All models are wrong, but some are useful."
  • Respect: +2575
Re: Help please
« Reply #1 on: August 08, 2017, 12:09:09 pm »
+1
It is probably really basic but I am struggling with this question and any help is appreciated.
Question 5.
A point moving with simple harmonic motion has a velocity of 4m/s when passing through the centre of its path and its period is Pi seconds. What is it's velocity when it is 1m from the position in which it's velocity is zero.

Thanks

Also, make sure you reread this: "What is it's velocity when it is 1m from the position in which it's velocity is zero"

epherbertson

  • Trailblazer
  • *
  • Posts: 25
  • Respect: 0
Re: Help please
« Reply #2 on: August 08, 2017, 01:56:54 pm »
0
Thanks. I did try that but got the answer wrong. My have got my numbers mixed up. Will try again.

RuiAce

  • ATAR Notes Lecturer
  • Honorary Moderator
  • Great Wonder of ATAR Notes
  • *******
  • Posts: 8814
  • "All models are wrong, but some are useful."
  • Respect: +2575
Re: Help please
« Reply #3 on: August 08, 2017, 02:07:08 pm »
+1
Rough working:


Note that the particle is rest AT the endpoints of motion for SHM.