Sub-strand 4.1 Vertical circle

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Vertical Circles

Content Learning Outcome

Apply the knowledge of Newton’s Second Law and appreciate the concept of rotational kinematics.

Mini Learning Outcome

• Recognize that the object feels lighter when descending and heavier when ascending in vertical circular motion.

• Identify the difference in the tension at the highest and the lowest points of the motion.

• Apply Newton’s Second Law to show and compute the tension force at the lowest and the highest point of motion.

• Calculate the minimum velocity of the mass at the top of a vertical circle.

TOP OF THE CIRCLE

BOTTOM OF THE CIRCLE

BOTTOM OF THE CIRCLE

Example

1. A bucket of water with mass of 0.80 kg is swung about in a vertical circle by a string 0.60m long . The speed of the bucket varies as it travels around the circle.

v

0.60

T

Activity