Question

A swimmer while jumping into river from a height
easily forms a loop in air if
(1) He pulls his arms and legs in
(2) He spreads his arms and legs
(3) He keeps himself straight
(4) None of these

Please explain too​

Answer 1

Answer:

1) He pulls his arms and legs in

Explanation:

As his body will be round, he will easily form a loop.

Answer 2

Answer:

1

Explanation:

because when he pulls his arms in the distance from centre of mass and body decreases and thus moment of inertia also decreases.

l1W1=l2W2 *

so when I Decreases angular velocity (W) increases and thus can make loops

* I is moment of inertia

W is omega which represent angular vel

hope you understand !

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