Experimental installation description

Experimental installation is represented in figure 1. On a vertical column 1, which is established on the base 2 with electronic stopwatch 3 placed on it, are fixed two arms: the bottom mobile 4 with the photo-electric gauge 5 and the top motionless 6. On the top motionless arm 6 is suspended reversible pendulum, looking like a steel peg on which are fixed

Figure 12.1 Figure 12.2

support knife-edge А and B and mobile weights C and D (figure 12.2).