Results 1 to 2 of 2

Thread: Linear velocity!

  1. #1
    Junior Member
    Feb 2009
    Fiery pits of confusion

    Linear velocity!

    Consider the tip of each hand of a clock. Find the linear velocity in mm per second for each hand.
    a. second hand which is 30 mm.
    b. minute hand which is 27 mm long
    c. hour hand which is 18 mm long
    I'm so seriously stumped!
    Here's what I know:
    that's linear velocity.
    The second hand moves 30 mm/second? That can't be right, as the linear velocity would be...840 mm/s.
    Agh, help? :]
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor Calculus26's Avatar
    Mar 2009
    the second hand rotates 2pirad/60 sec

    v = 30mm*2pi/60sec = pi mm/sec

    similar for the rest
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Linear Velocity?
    Posted in the Trigonometry Forum
    Replies: 5
    Last Post: Dec 7th 2011, 06:06 AM
  2. Linear and angular velocity 2 problems?
    Posted in the Math Topics Forum
    Replies: 6
    Last Post: Jan 6th 2011, 04:11 PM
  3. Angular and linear velocity problem...
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: Jan 31st 2010, 08:38 AM
  4. Linear Velocity
    Posted in the Advanced Applied Math Forum
    Replies: 2
    Last Post: Dec 5th 2008, 10:59 AM
  5. Replies: 1
    Last Post: Aug 29th 2008, 02:18 AM

Search tags for this page

Click on a term to search for related topics.

Search Tags

/mathhelpforum @mathhelpforum