Thursday
March 30, 2017

Post a New Question

Posted by on .

what is the kinetic energy of a ball with a mass of 5 kg rolling at 10 m/s

  • science - ,

    Total kinetic energy depends upon whether the ball is solid or hollow. Total kinetic energy is the sum of translational kinetic energy (Etran),
    (M/2)*V^2, and rotational kinetic energy (Erot). The rotational kinetic energy depends upon the moment of inertia.
    Erot = (1/2)I*w^2
    where w = V/R.

    For a solid ball of uniform density,

    I = (2/5)M*R^2, and
    Erot = (1/2)(2/5)M*R^2*(V/R)^2
    = (M/5) V^2

    Etotal = Etrans + Erot = (7/10)M*V^2

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question