Phys 1 Student Workbook.pdf

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Physics Labs with Computers, Vol. 1Student WorkbookP05: Free Fall (Picket Fence) 012-07000A2. How does the mean of the acceleration from the table compare to the accepted value of theacceleration of a free falling object (g = 9.8 m/s2)?3. What factors do you think may cause the experimental value to be different from theaccepted value?Optional• Determine whether releasing the Picket Fence from just above the Photogate or from severalinches above the Photogate makes any difference in the value of the acceleration. Note thatthe Table and Graph displays will show the most recently recorded run of data. To view adifferent run of data, click on the DATA menu and select the data run you want from the list.• Sketch a graph of velocity vs. time for an object falling from rest, taking into account airresistance.p. 34 © 1999 PASCO scientific P05
Name _____________________ Class ______________ Date _________Activity P06: Acceleration Due to Gravity(Motion Sensor)Concept DataStudio ScienceWorkshop (Mac) ScienceWorkshop (Win)Linear motion P06 Gravity.ds G14 Gravity G14_GRAV.SWSEquipment Needed Qty Other QtyMotion Sensor (CI-6742) 2 Ball, rubber 1Base and Support Rod (ME-9355) 1 Level (optional) 1Meter stick 1What Do You Think?How can a Motion Sensor be used to measure the acceleration due to gravity of a falling object?Take time to answer the ‘What Do You Think?’ question(s) in the Lab Report section.BackgroundOver twenty-two centuries ago, a Greek philosopher and scientist namedAristotle proposed that there is a natural force that causes heavy objects to falltoward the center of Earth. He called this force “gravity”. In the seventeenthcentury, the English scientist Isaac Newton was able to show that gravity is auniversal force that extends beyond Earth. It is the force that causes the moonto orbit the Earth and the Earth to orbit the Sun.When an object is in “free fall”, it means that the only force acting on it is theforce of gravity. As an object falls freely, it accelerates. For a falling objectnear the surface of Earth, the rate of change of velocity is a constant value. Thisvalue is the acceleration due to gravity. If you ignore air resistance, a fallingball accelerates as if it is in free fall. You can measure the motion of the fallingball to find the value of the acceleration due to gravity.SAFETY REMINDER.• Follow directions for using the equipment.For You To DoUse the Motion Sensor to measure the motion of a ball as it falls and bounces. Use DataStudio orScienceWorkshop to record and display the position and velocity of the ball. Examine the slopeof the line on a velocity versus time graph to find the acceleration of the ball.P06 © 1999 PASCO scientific p. 35
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Phys 1 Student Workbook.pdf

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