PHY 101L Module Four Lab Report Centripetal Force (1)

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Southern New Hampshire University *

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101L

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Mechanical Engineering

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Feb 20, 2024

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/PHY101L Module Four Lab Report Centripetal Force Name: Amber Smith / Date: 9/22/2023 Complete this lab report by replacing the bracketed text with the relevant information. Activities 2 and 3: Centripetal Force Data Table 1 Trial 1 2 3 4 5 # of Washers 1 2 3 4 5 Mass of Bag with Washers (g) 29.2g 55.2g 81.6g 107.7g 134g Mass of Bag with Washers (kg) 0.0292kg 0.0552kg 0.0816kg 0.1077kg 0.134kg Mass of Bobber (g) 11.1g Mass of Bobber (kg) 0.0111kg Radius (cm) 30cm Radius (m) 0.3m Circumference (m) 1.88m Time of 30 Revolutions (s) 32.12s 33.81s 34.94s 33.31s 37.38s Time of 1 Period (t) 1.07s 1.12s 1.16s 1.11s 1.24s Velocity (m/s) 1.76m/s 1.67m/s 1.62m/s 1.69m/s 1.51m/s Centripetal Force (m / r) 0.11 0.10 0.09 0.10 0.8 Weight of Washers 286.16 540.96 799.68 1055.46 1313.2 Percent Difference 99.9% 91.5% 99.9% 99.9% 99.9% Activities 1–3: Questions 1. In Activity 1, which way did the blue marble travel when the cup was removed? Once released the marble went in the direction of the mark on the cup and then at a left angle too. 2. You spun a bobber with a mass of 14 washers in the cylinder, and one with a mass of 8 washers in the cylinder. How does the velocity of the 14-washer bobber compare with the velocity of the 8-
washer bobber? Describe the relationship between the mass of the cylinder with the washers and the velocity of the bobber. If I compare spinning 2 washers vs spinning 5 washers, the velocity of spinning two washers is higher than 5 washers. The mass that was lower gave a faster velocity because mass and velocity are inversely proportional to one another. 3. What do you notice about the relationship between the centripetal force and the weight of the cylinder with washers? Because force is equal to mass *v2/radius, the weight of the washers affects the velocity, which in turns affects the force. 4. How will centripetal force be affected if you double the velocity at which you spin the bobber? If you double the velocity, the force will go up as well. Because Force is equal to mass*v2/radius 5. What would you expect to happen to the velocity of the bobber if the mass of the washers in the cylinder remained the same and the radius was doubled? The velocity can be found by the circumference/time for one period. If radius is doubled then the velocity should also be doubled.
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