Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Trending News

Promoted
nico
nico asked in Science & MathematicsPhysics · 12 months ago

what is the ratio of magnitude of centripetal accel. to accel. due to gravity? of. a wheel w/ 7.5 cm and rotates at 6500 rev/min?

An ordinary workshop grindstone has a radius of 7.50 cm and rotates at 6500 rev/min

The ratio of magnitude of centripetal acceleration to acceleration due to gravity is

3 Answers

Relevance
  • oubaas
    Lv 7
    12 months ago

    Ca = ω^2*r = (0,10472*6500)^2*7.5/100 =  34,750 m/sec^2 

    Ca/g = 34,750 / 9.807 = 3,540 

  • oldschool
    Lv 7
    12 months ago

    ω = 6500rev/min * 2π rad/rev * 1min/60s = 13,000π/60 = 650π/3 = 681rad/s

    V = ωr -----> V²/r = ω²r = 34,750

    34750/9.8 = 3546

  • Andrew Smith
    Lv 7
    12 months ago

    a/g = w^2 R / g = (2*pi() * 6500/60)^2 * 0.075 / 9.8  ~= 3.5 * 10^3

Still have questions? Get your answers by asking now.