Physics · 2011
NEET 2011 · Mains · Code B · Q111
A small mass attached to a string rotates on frictionless table top as shown. If the tension in the string is increased by pulling the string causing…
A small mass attached to a string rotates on frictionless table top as shown. If the tension in the string is increased by pulling the string causing the radius of the circular motion to decrease by a factor of $\displaystyle 2$, the kinetic energy of the mass will:
Official answer
(3)
increase by a factor of $\displaystyle 4$
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NEET (UG) 2011 Physics question, with the answer from NTA’s final answer key. Where our answers come from.