Q10. Many old clocks use a pendulum to keep time. If each swing from one side to the other takes 1 second, the clock is said to have a "seconds pendulum. What length is required to build such a clock on Mars (g = 3.7 m/s)? (13 points) Q10. Many old clocks use a pendulum to keep time. If each swing from one side to the other takes 1 second, the clock is said to have a "seconds pendulum. What length is required to build such a clock on Mars (g = 3.7 m/s)? (13 points)