Two clocks A and B are shown in Figure 13.1. Clock A has an hour and a minute hand, whereas clock B has an hour hand, minute hand as well as a second hand. Which of the following statement is correct for these clocks?
A wall clock uses a vertical spring mass system to measure the time. Each time the mass reaches an extrem position, the clock advances by a second. The clock gives correct time at the equator. If the clock is taken to the poles it will
