27.8: Sample lab report (Measuring g using a pendulum) Any object can oscillate like a pendulum. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. The acceleration of gravity decreases as the observation point is taken deeper beneath the surface of the Earth, but it's not the location of the compound pendulum that's responsible for the decrease. /F11 36 0 R >> /Contents 4 0 R The vertical pendulum, such as that developed by ONERA, 12 uses gravity to generate a restoring torque; therefore, it has a fast response to thrust due to the larger stiffness. We adjusted the knots so that the length of the pendulum was \(1.0000\pm0.0005\text{m}\). Apparatus and Accessories: A compound pendulum/A bar pendulum, A knife-edge with a platform, A sprit level, A precision stopwatch, A meter scale, A telescope, Indeed, the reversible pendulum measurement by Khnen and Furtwngler 5 in 1906 was adopted as the standard for a world gravity network until 1968. We built the pendulum with a length \(L=1.0000\pm 0.0005\text{m}\) that was measured with a ruler with \(1\text{mm}\) graduations (thus a negligible uncertainty in \(L\)). If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. An important application of the pendulum is the determination of the value of the acceleration due to gravity. xZnF}7G2d3db`K^Id>)_&%4LuNUWWW5=^L~^|~(IN:;e.o$yd%eR# Kc?8)F0_Ms reqO:.#+ULna&7dR\Yy|dk'OCYIQ660AgnCUFs|uK9yPlHjr]}UM\jvK)T8{RJ%Z+ZRW+YzTX6WgnmWQQs+;$!D>Dpll]HxuC0%X/3KU{AaLKKVQ j!uw$(0ik. A . In this experiment, we measured \(g\) by measuring the period of a pendulum of a known length. The various results that I have found, reveals that the average value of acceleration due to gravity for Azare area of Katagum Local Government is 9.95m/s 2 which approximately equal to the accepted value of 10.0m/s 2. We suspect that by using \(20\) oscillations, the pendulum slowed down due to friction, and this resulted in a deviation from simple harmonic motion. As the skyscraper sways to the right, the pendulum swings to the left, reducing the sway. This looks very similar to the equation of motion for the SHM \(\frac{d^{2} x}{dt^{2}}\) = \(\frac{k}{m}\)x, where the period was found to be T = 2\(\pi \sqrt{\frac{m}{k}}\).