question_answer

A solid disc rolls clockwise without slipping over a horizontal path with a constant speed \[\upsilon \].  Then the magnitude of the velocities of points A, B and C (see figure) with respect to a standing observer are respectively [UPSEAT 2002]

A)              \[\upsilon ,\,\upsilon \text{ and }\upsilon \]

B)               \[2\upsilon ,\,\sqrt{2}\upsilon \text{ and}\,\text{zero}\]

C)             \[2\upsilon ,\,2\upsilon \text{ and}\,\text{zero}\]

D)               \[2\upsilon ,\,\sqrt{2}\upsilon \text{ and}\,\sqrt{2}\upsilon \]

Correct Answer: B

Solution :