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23S11

2023 T2W3

Physics HBL Day

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Group 1

  • Team members:
  • 1. Cheng Zhan
  • 2. Ethan
  • 3. Kendric

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Circular

Motion

of a

​

Spinning

Mop

VS

Circular motion of a wheelchair wheel

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Spinning mop

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Spinning wheel of wheelchair

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Conclusions

  • In general, for both experiments, as angular velocity increases, angular acceleration increases
  • In experiment 1(spinning mop), there were inconsistencies in the force applied when pushing the mop down leading to outliers in the data. It can be seen that to sustain a angular velocity of 35rad/s, the acceleration at that instant is very large. This is an important aspect of the design of the mop to remove water quickly with minimal effort.
  • In experiment 2(wheelchair), inaccuracies may arise due to having to manually spin the wheel multiple times to keep the wheel spinning. There might be inconsistent force applied each time and hence, the readings for angular velocity and angular acceleration may be affected.

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Group 2

  • Team members:
  • 1.
  • 2.
  • 3.

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Group 2

  • Feel free to do up the slide and add more slides if required.

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Group 3

  • Team members:
  • 1. Akhil
  • 2. Jing Zhe
  • 3.

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Group 3

  • Feel free to do up the slide and add more slides if required.
  • ​

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Conclusion

  1. As angular velocity increases, acceleration increases
  2. We had to tape the phone to the chair while spinning to ensure that it didn't fly off. This will prevent motion from the phone itself and also improve the accuracy of the results.
  3. The chair doesn't spin continuously so a constant force has to be exerted. As this constant force is by a human, it will cause inaccuracy in results due to human error.

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Group 4

  • Team members:
  • 1. Jamie
  • 2. Wan Xun
  • 3.

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Group 4

  • Feel free to do up the slide and add more slides if required.
  • ​

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Physics HBL Task 2

By Kate, Nicole, Anvita

(Group 5)

Circular

Motion

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Data

Circular motion of a spinning rolling chair

​

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  • As angular velocity increases, acceleration increases

​

  • Difficulty faced to ensure a constant velocity of spinning chair with phone attached, since a force had to be exerted manually to spin the chair continuously (human error)
  • hence leading to inaccuracies in results

(as shown in data, where acceleration should be directly proportional to angular velocity)

Analysis & conclusion

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Group 6

  • Team members:
  • 1. Jun Yang
  • 2. Nicky
  • 3. Jonathan

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Group 6

  • Feel free to do up the slide and add more slides if required.

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Group 7

  • Team members:
  • 1. Ashlee
  • 2. Aarna
  • 3.

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Circular Motion of an Office Chair

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Data

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Conclusion

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  • As acceleration increases, angular velocity increases.
  • It is difficult to rotate the chair at different speeds
  • The entire chair tends to spin as well, causing data to be inaccurate

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Circular motion of a fan

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DATA

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Conclusion

​

​

  • As acceleration increases, angular velocity increases.
  • It was difficult for the fan to spin continuously with the phone attached to it due to the weight of the phone.
  • The fan tends to not spin continuously, leading to some inaccuracies

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Group 8

  • Team members:
  • 1.Nghi
  • 2.Yuying
  • 3. Evelyn

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Group 8

  • Feel free to do up the slide and add more slides if required.
  • as angular velocity increases, acceleration also increases. they are directly proportional to each other as implied from the gradient of the graph.

​

  • due to the weight of the phone it was difficult to rotate the fan at constant speed continuously, thus the results showed some accuracies

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Group 9

  • Team members:
  • 1. sumin
  • 2. ella
  • 3.

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Group 9

  • Feel free to do up the slide and add more slides if required.

<circular motion of a spinning chair>

​

  • as acceleration increases, angular velocity increases
  • the chair did not spin constantly, as shown by the anomalies in the graphs

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Group 10

  • Team members:
  • 1. Daniel
  • 2. Darrius
  • 3. Timothy

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Group 10

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Conclusion

  • Acceleration varies directly with angular velocity. (As angular velocity increases, acceleration increases)
  • The experiment was carried out by placing the device in a bag and spinning it in a circle. Since the experiment was carried out by human, there will be inaccuracies as the speed of spinning and increase in acceleration is hard to be maintained accurately throughout the experiment.