acceleration due to gravity.docx - Lily Mills Acceleration Due to Gravity Practical 10G Aim To use three methods to measure the acceleration due to

Lily Mills Acceleration Due to Gravity Practical 10G Aim: To use three methods to measure the acceleration due to gravity. Method:  Prac 1: Freefall: Drop a tennis ball off the balcony and measure the height through which it fell and the time it takes to reach the ground. Do this three times and take the average time.  Prac 2: Ticker tape: Sticky tape a mass to the end of a piece of ticker tape and use a ticker tape timer to obtain three tapes of free fall.  Prac 3: Simple Pendulum: Measure the time it takes for a simple pendulum to make ten complete oscillations (i.e. back to where it started is a complete oscillation) and the length of the pendulum. (Note small oscillations and a long length give the best results). Results:  Prac 1: Drop Time (s) 1 1.3 2 1.7 3 1.53 Distance from balcony to ground was 7.6 metres. The average time it took for a tennis ball to reach the ground was 1.53 seconds.

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Unformatted text preview: S= distance= 7.6 metres A= acceleration= T= time taken=1.53 seconds U= initial velocity= 0 Acceleration due to gravity: s = 1 2 at 2 + ut s − ut = 1 2 at 2 1 2 at 2 = s − ut at 2 = 2 ( s − ut ) a = 2 ( s − ut ) t 2 a = 2 ( 7.6 − ( × 1.53 ) ) 1.53 2 2 decimal places a = 6.49 ¿ ) metres per second Prac 2: a= (final/0.02-initial/0.02)/(number of dots between final and initial x 0.02) ms-2 final velocity: 10 initial velocity: 6 Lily Mills Acceleration Due to Gravity Practical 10G a = final velocity 0.02 − initialvelocity 0.02 ( final velocity − inital velocity ) × 0.02 a = 10 0.02 − 6 0.02 ( 10 − 6 ) × 0.02 a = 20.24 metres per second Prac 3: L=length= 30 cm T=period= 15.15 seconds G= G L ¿ ¿ ¿ T = 2 π √ ¿ T 2 π = √ L G T 2 4 π 2 = L G G = 4 π L 2 T G = 4 × π× 30 2 15.15 G = 746.52 ( 2 decimal places )...
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