Question

Find angular velocity and linear velocity of tip of minute hand of length 10cm

Answer 1

Answer:

Length of minute hand = 10cm

For one revolution ,minute hand takes time = 1 hour

= 60minutes = 60 × 60sec = 3600 sec

so, time period of minute hand ,

T = 3600 sec so, angular velocity ,

ω = 2π/T = 2π/3600 = π/1800 rad/s

∵ linear velocity = angular velocity × length of minute hand

= π/1800 × 10 cm= π/180 cm/sec

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Answer 2

Answer:

the radius of circle will we 10cm and taken time will be 60sec

so

angular velocity =cover distance in one rotation /taken time

= 2πr/t

= 2*3.14*10/60

= 62.8/60

= 1.04rotation per second