SSC JE Mechanical Engineering 2013 Paper

Question : 175 of 200

Marks: +1, -0

A liquid moving with constant angular mom-entum has tangential velocity of 1.2 m/s, 3 m from axis of rotation. The tangential velocity at 1.5 m from axis of rotation, in m/s, is

0.6
3.75
5.4
6.0

Validate

Solution:

Angular velocity

w = {\Tangential \velocity}/ {\radius}= v /r

Given

w=1.2/3

For same ‘w’ velocity (tengential) at

r = 1.5 \m

V_2=r×w

=1.2/5×1.5=1.2/2=0.6

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