Pp Acceleration Due To Gravity

Measuring the acceleration due to gravity with a datalogger This experiment uses a datalogger and light gates

A computer measures the time for a weight attached to a card to move through two light gates

0.25 m wide interrupt card

Weight

Light gates

T1 = 0.35 s T2 = 0.12 s T3 = 0.14 s

0.71 m/s T1 is thegate time1 it=takes the=interrupt Velocity 0.25 /for 0.35 card togate go through first = light gate Velocity 2 = 0.25the / 0.12 2.08 m/s Ready T is the time it takes in velocity / time 2 Acceleration = change for the second gate Acceleration = (2.08 – 0.71) / 0.14 T3 is the time the to 2 9.78 m/s 1.37 / for 0.14 = trolley Acceleration = taken travel from one gate to the next

Other parameters can be changed to find the best value (largest) for the acceleration due to gravity

What is the best weight to use?

What is the best distance between the gates?

How can air resistance be minimised?

What drop distance gives the best answer?