Question

A massless rod has a point mass attached to one end while the other end is hinged. The rod is released from the position shown. The speed of the mass at the bottom most point is $(R = 14 m, g = 10 m/s^2)$

• A. √560 m/s
• B. √280 (1 + 1/√2) m/s
• C. √280 m/s
• D. √280 (1 + 1/√3) m/s

Answer 1

Answer: (B)

√280 (1 + 1/√2) m/s

Answer 2

The correct answer is option (B): √280 (1 + 1/√2) m/s