measurement of acceleration due to gravity(g) freefall method

Question 1

describe how the time interval t was measured.

Answer 1

a scalar timer was connected to a solenoid and a trapdoor. the solenoid held the ball bearing the place. when the timer was started, the solenoid was switched off. when the ball bearing hit the trapdoor, the timer stopped. this recorded the time interval t.

Question 2

what did you need to do to get a new set of data

Answer 2

adjusted the height of the solenoid from the trapdoor. reset equipment. recorded the distance and the time taken.

Question 3

what is plotted on the x and y axes from the graph for this experiment?

Answer 3

s and t-squared

the distance and the time squared

Question 4

how would you use this graph to calculate a value for acceleration due to gravity

Answer 4

the slope of ther graph x2 is equal to the acc due to gravity g
g=2(slope)

Question 5

give two precautions that should be taken to ensure a more accurate result.

Answer 5

use a small,heavy,spherical ball to reduce error due to air resistance.
read from above the ruler to rule out parallax error