About the ads

  1. Check out PREMED.me!
    Offers FREE service to help premeds manage their applications and MCAT study calendars and identify schools to target.
  2. Free Financial Webinar with White Coat Investor! Monday evening at 7:00 PM EDT, hear about the Top 5 Financial Considerations for Starting Residents from White Coat Investor's Dr. James Dahle. Register here. Hope to see you there!

Mcat pendulum question~~

Discussion in 'MCAT Study Question Q&A' started by johnwandering, Apr 18, 2012.

  1. SDN is a nonprofit organization. Services are made possible through the generous support of SDN members and sponsors. Thank you.
  1. johnwandering

    johnwandering

    Joined:
    May 18, 2009
    Messages:
    418
    SDN 2+ Year Member

    SDN Members don't see this ad. (About Ads)
    A pendulum consists of an object of mass m = 1.65 kg swinging on a massless string of length l. The object has a speed of 1.97 m/s when it passes through its lowest point. If the speed of the object is 0.87 m/s when the string is at 70° below the horizontal, what is the length of the string?

    The relavent info is
    Ek= 1/2 mv^2
    Ep= mgh
  2. bajoneswadup

    bajoneswadup

    Joined:
    Mar 26, 2011
    Messages:
    147
    Status:
    Pre-Medical
    I'm just guessing, but wouldn't you find energy change and
    divide that by the ac, since ac = tension? could be wrong
  3. dmf2682

    dmf2682

    Joined:
    May 29, 2011
    Messages:
    1,307
    Status:
    Pre-Medical
    Rocket Scientist SDN 2+ Year Member
    I get roughly 1.6 m without using a calculator. What are the choices?

Share This Page


About the ads