1.

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»

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.


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