Question

The kinetic energy of a particle of mass m1 moving with a speed V is same as the kinetic energy of a solid sphere of mass m2 rolling on the plane surface. If the speed of the Centre of the sphere is also V,then m1/m2 is:

• A. $\frac{7}{10}$
• B. $\frac{1}{2}$
• C. $\frac{5}{7}$
• D. $\frac{7}{5}$
• E. $\frac{2}{3}$

Answer 1

Answer: (D)

$\frac{7}{5}$

Answer 2

The correct answer is (D):$\frac{7}{5}$