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        The length of second s hand clock is 1cm what is the change in velocity of tips in15 second
one year ago

Khimraj
2612 Points
							First of all answer given in your attachment is wrong.Correct answer will be calculated asAngular velocity of tip of second’s hand w = 2π/60 rad/s = π/30 rad/svelocity of tip v = w*r = π/30 cm/sLet the initial position of second hand is at 12 and final is at 3.then intial velocity v1= (π/30)$\hat{i}$and final velocity v2 = (π/30)(-$\hat{j}$)change in velocity = |v1-v2| = π(2)1/2/30 cm/sHope itclears.
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one year ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions