rank the resulting angular velocities from smallest to large

rank the resulting angular velocities from smallest to largest given the scenarios

cnopey baaes. Ties sbsuld be groupad in the same her 3\' 2\" 1 2 3 4

Solution

For circular motion,

force of magnetic force must provide the necessary centripetal force

So, qvB = mv^2/R

So, v/R = qB/m

Now, in the figure:

a)

for the CD to make on complete revolution every second,

angular velocity, W = 2*pi/1 = 2*pi rad/s

So, angular velocity at position 4 = 2*pi rad/s

b)

for W = 2*pi/0.5 = 4*pi rad/s

c)

here W = 2*pi/2 = pi rad/s

d)

here W = 2*pi/2 = pi rad/s

e)

W = 2*pi/2 = pi rad/s

So, ranking is : { (e) = (d) = (c) } < (a) < (b)