A disc is undergoing pure rolling motion on a flat surface. The radius of the disc is 5cm & velocity of centre of mass is 10m/s. What is the ratio of kinetic energy as seen from the ground frame to a frame moving along the disc with a speed of 10m/s?
A. 1:1, kinetic energy is frame independant
B. 3:1
C. 2:1
D. 1:3
Answer:B
A disc is undergoing pure rolling motion on a flat surface. The radius of the disc is 5cm & velocity of centre of mass is 10m/s. What is the ratio of kinetic energy as seen from the ground frame to a frame moving along the disc with a speed of 10m/s?
A. 1:1, kinetic energy is frame independant B. 3:1 C. 2:1 D. 1:3