1.

Earth completes one revolution round the sun in 365.25 days. What is the angular velocity ?

Answer»

Solution :Angle subtended for ONE revolution `=THETA = 360^(@) = 2pi` rad
TIME taken `=T = 365.25` days = `365.25 xx 24 xx 60 xx 60`
ANGULAR velocity `=omega = (2pi)/T = (2 xx 3.14)/(365.25 xx 24 xx 60 xx 60)`
`= 1.9 xx 10^(-7)` rad/s


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