Question

The equation of SHM of a particle is A + 4π²x = 0 where a is instantaneous linear acceleration at displacement x. The frequency of motion is(a) 1 Hz(b) 4π Hz(c) 1/4 Hz(d) 4 Hz

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