A'Grand Father's Clock' has its minute hand 20 cm long. (a) What is the average speed of minute hand ? (b) Find the average velocity of the tip of the minute hand between 3 AM to 3.30 AM
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Answer:
Between 6 am to 6:30 am
Average speed = Total distance/ Time
= πr / (30 × 60 seconds)
= 4π/1800
= 0.00698 cm/s
Average velocity = Total displacement/ Time
= 2r / (30 × 60 seconds)
= 8 / 1800
= 0.0044 cm/s
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Average velocity and average speed between 6 am to 6:30 pm is same as that of 6 am to 6:30 am
Explanation:
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