Question

A circular hoop of radius R is hung over a knife edge. The period of oscillation is equal to that of a simple pendulum of length(a) R(b) 2R(c) 3R(d) 3R/2

Answer 1

A clock which keeps correct time at 20°C, is subjected to 40°C. If coefficient of linear expansion of the pendulum is 12 × 10⁻⁶ per °C. How much will it gain or loose in time?(a) 10.3 seconds/day(b) 20.6 seconds/day(c) 5 seconds/day(d) 20 minutes/day