RRB Technician 2014 Ques 34
Question: While jumping in a swimming pool, a swimmer bends his body to decrease his
Options:
A) angular momentum
B) angular speed
C) kinetic energy of translation
D) moment of inertia
Show Answer
Answer:
Correct Answer: D
Solution:
- When the swimmer bends his body, he decreases his moment of inertia. As, $ l,\omega $ is constant, when l decreases, co increases, /co remains constant because no external torque is applied to the system.
BETA
