An experiment to measure the value of g is constructed using a tall tower outfit

Question

An experiment to measure the value of g is constructed using a tall tower outfited with two sensing devices, one a distance H above the other. A small ball is fired straight up in the tower so that it rises to near the top and then falls back down; each sensing device reads out the time that elapses between the ball going up past the sensor and back down past the sensor.

1) Choose an expression for g using times t1, t2, and the height H. (already have answer for this one)

2) Determine the value of g if H equals 25.2 m, t1 equals 6.02 s, and t2 equals 4.00 s. (Express your answer to three significant figures.)

Explanation / Answer

Substitute t1, t2 and H in formula for your answer of part 1 and calculate value for g.

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