Question

The pendulum of a certain clock has time period 2.04s. how fast or slow does the clock run during 24hr? 1) 28.8 min slow. 2)28.8 min fast 3)14.4 min fast. 3)14.4 min slow

Answer 1

Given,
Time period of the clock pendulum = 2.04 s

The number of oscillations made by the pendulum in one day is calculated as
Nmber of seconds in one daytime period of pendulum in seconds=24×36002= 43200

In each oscillation, the clock gets slower by (2.04 − 2.00) s, i.e., 0.04 s.
In one day, it is slowed by = 43200 × (0.04)
                                          = 28.8 min
Thus, the clock runs 28.8 minutes slow during 24 hours.

Answer 2

I think that 1) is the correct answer