Calculate a value for the acceleration of gravity, with its standard error. Find the average acceleration, the standard deviation, and the standard error. Find the acceleration of the cart for 10 trials. Calculate a value for the acceleration of gravity, with its standard error.Įxperiment 2: Set the track to its maximum slope. The slope of this linear fit is the acceleration of the cart.įind the acceleration of the cart for 10 trials.
If there is questionable data at the beginning and/or end of the run, use the Highlight range tool to highlight the valid linear data. Fit a line to the data by choosing Linear: mt + b from the Apply selected curve fits menu. Position and velocity as functions of time will be plotted on the graphs.Ĭhoose the velocity graph by clicking somewhere within its window. The motion sensor will begin to click rapidly once Record has been selected, but no data will be recorded until the cart passes the 20 cm point. The motion sensor has been set to record data at 25 Hz, beginning 20 cm from the motion sensor, and ending 160 cm away.Įxperiment 1: Place the cart less than 20 cm from the sensor, make sure it can get to more than 160 cm from the sensor, click Record, and release the cart. You'll find graphs for both position and velocity as a function of time. Make sure the motion sensor is plugged in to channels 1 (yellow plug) and 2 (black plug) of the interface unit. The gravitational force of the Earth causes all objects to be accelerated towards the center of the Earth. THEORY The force of gravity affects all massive bodies. Check that the motion sensor is at the end of the track and is pointing down it. The objective of the lab was to determine the gravitational acceleration constant, g, by measuring the change in velocity of known masses sliding down an inclined plane. Record the height of the riser, and the distance between the track supports. This can be done by gently rolling the cart in each direction, and seeing if the motion is the same each way. The position and velocity as a function of time is measured at short time intervals by a motion sensor and recorded (and displayed in graphs) by the computer. The track is converted to a ramp by raising one end by some suitable method and starting the cart from close to the high end of the track. Acceleration values are obtained by finding the slope of the velocity vs.
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Automated measurements are made with devices that are interfaced to a computer and provide real time graphs of the motion. For each height, calculate the mean value of gravity and time. Question these experiments will enable you to answer: What is the acceleration due to gravity?įeatures: The object is a cart on a track (a one-dimensional space).
#FINDING ACCELERATION DUE TO GRAVITY LAB MANUAL#
Physics 2211 Lab 2 - Lab Manual Physics 2211, Lab 2: The Acceleration due to Gravity The report should be in the Standard Physics Lab Report Format that you received at the beginning of the year.
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