science
posted by jhay .
a mass of 0.2 kg is whirled at 12 revolutions in 2 sec in a horizontal circle at the end of o string0.8m long.(a)angular velocity (b)linear velocity (c) central acceleration (d) central force

angular velocity= angle/time=12*2PI/2 rad/sec
linear velocity= r*angularvelocity
central acceleration= w^2 * r
force= mass* centralacceleration
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