![]() ![]() ![]() Newton’s classical theory of gravitational force held sway from his Principia, published in 1687, until Einstein’s work in the early 20th century. The works of Isaac Newton and Albert Einstein dominate the development of gravitational theory. Understand the concept of gravitational force using Newton's theory of gravitation See all videos for this article SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more. ![]() This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.due to gravity- accepted value) x 100% accepted value of acc. Percent Error - (experimental value of acc. Experimental value of acceleration due to gravity = (gl + g2 +93 +94 +95.) 5 Accepted value of acceleration due to gravity = Calculate the percent error. Data: Number of Swings N Total Time of Period 50 swings т Period Squad T Acceleration due to Gravity ! Pendulum Length L metersim) 0.15 0.25 0.35 0.45 0.55 Calculate the average acceleration due to gravity experimentally. You now have 5 experimental values for the acceleration due to gravity (g) in your room. Place this value in the 6 column of the table. *Using this equation for acceleration due to gravity, calculate the value of gravity obtained for all 5 lengths. It is about 3.14, and T is the period in seconds. You should get that g= 4(XXL), where g is acceleration due to gravity in m's, T where L is the length of the string in meters. Now algebraically rewrite the equation for the Period of a Pendulum from the given information above for acceleration due to gravity (g). This is the period squared (T) in second(s). Square each of these 5 periods from column 4 and place in column 5. ![]() Place this value in column 4 in table below. T-time total for 50 swings)/(50 swings) Number of seconds for one swing. This is the time it takes for swing, or total time of 50 swings divided by the number of swings. One swing is over and back to where it started Repeat steps 1-3 for 25 cm, 35 cm, 45 cm, and 55 cm Calculations Calculate the period (T) in seconds. Record this total time (t) in seconds (s) in the 3 column in the table below. Count and time with the stopwatch 50 swings. 2 Draw the bob about 30 degrees to one side and release it. Place the meter stick with end containing bob off of a flat table or counter top where string can freely swing. Measure this length from the point of support on the meter stick to the center of the metal bob (4-5 metal nuts). Adjust the length of the pendulum (string and bob) so that it is exactly 15 cm from where string is tied to the meter stick and center of bob. Remember that on the Earth, the acceleration due to gravity (g) is equal to 9.8 m/s Procedure: Data Collection Suspend the metal bob (4-5 metal nuts) from one end of the meter stick by means of the string. Transcribed image text: Lab 3 - Acceleration due to gravity Use a simple pendulum to determine the acceleration due to gravity Given: Theoretical studies of the simple pendulum have shown that the period (T) of a pendulum is given by: T- 2X Where I or L= the length in meters (m), T-the period in seconds (s), and g acceleration due to gravity in meters/second (m/s) The period is the time for one complete swing (a full swing, starting and stopping in the same position) The time (period) for one complete swing (cycle) of a pendulum depends on the length of the pendulum and on the acceleration due to gravity. ![]()
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