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:
\(\frac{7}{10}\)
\(\frac{1}{2}\)
\(\frac{5}{7}\)
\(\frac{7}{5}\)
\(\frac{2}{3}\)
The Correct Option is D
Solution and Explanation
The correct answer is (D):\(\frac{7}{5}\)
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Concepts Used:
Kinetic energy
Kinetic energy of an object is the measure of the work it does as a result of its motion. Kinetic energy is the type of energy that an object or particle has as a result of its movement. When an object is subjected to a net force, it accelerates and gains kinetic energy as a result. Kinetic energy is a property of a moving object or particle defined by both its mass and its velocity. Any combination of motions is possible, including translation (moving along a route from one spot to another), rotation around an axis, vibration, and any combination of motions.
