Part II With a mass of 300g on the 50g weight hanger stretch the 1cm from the

Part ii with a mass of 300g on the 50g weight hanger

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Part II With a mass of 300g on the 50g weight hanger, stretch the 1cm from the equilibrium position of the system. Release the weight and measure and record the time for twenty complete vibrations. Repeat the procedure with the same weight but this time stretch 3cm from the equilibrium position. Compare the results. Part III With masses of 250g, 350g and 450g stretch the spring a small distance from the equilibrium position (3cm). Release the weight and measure and record the time for twenty vibrations. The time measurement should be repeated at least 3 to 4 times. Calculate the average time for twenty complete vibrations and the oscillation period for each mass and record in the Data Table. Part IV Hang the pendulum at the groove of the small rod. Adjust the length of the pendulum to 20cm, 30cm, and 50cm. For each length, displace the pendulum at a small angle (we did 7 ). Measure the time for 20 complete oscillations. The time should be measured 3 times and take an average. Record all data in the Data Table. Results / Calculations Table I y 0 = 0.282 m Mass of total weight m (kg) Weight of total mass w (N) = mg Position y 1 (m) Displacement y=y 1 – y 0 (m) 0.05 + 0.20 2.45 0.295 0.013 0.05 + 0.30 3.43 0.321 0.039 0.05 + 0.40 4.41 0.345 0.063
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Table II Mass of total weight m (kg) Time for 20 cycles for 1cm amplitude (s) Time for 20 cycles for 3cm amplitude (s) 0.05 + 0.30 11.80 10.55 Table III Mass of total weight m (kg) Time for 20 vibrations Average time for 20 oscillations (s) Oscillation period T (s) T 2 (s 2 ) 0.05 + 0.20 8.97 8.98 8.98/20 = 0.449 0.202 8.86 9.12 0.05 + 0.30 10.55 11.32 11.32/20 = 0.566 0.320 11.86 11.64 0.05 + 0.40 13.39 13.38 13.38/20 = 0.669 0.448 13.52 13.24 Table IV Length L of pendulum (m) Time for 20 vibrations (s) Average time for 20 oscillations (s) Oscillation period T (s) T 2 (s 2 ) 0.20 19.14 19.24 19.24/20= 0.962 0.925 19.36 19.22 0.30
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