Question

9.
Two
Two persons of masses 55 kg and 65kg respectivel
are at the opposite ends of a boat. The length of t
boat is 30 m and weighs 100 kg. The 55 kg man wal
up to the 65 kg man and sits with him. If the boat is
still water the center of mass of the system shift by
(1) zero (2) 0.75 m (3) 3.0 m (4)2.3 m
​

Answer 1

$\huge\mathfrak\blue{hello}$

OPTION 1 : ZERO

Here on the entire system net external force on the system is zero. Hence the centre of mass remains unchanged.

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