Question
Question: A 60 kg woman stands up in a 120 kg canoe of length 5m. She walks 1 m from one end to 1m from the ot...
A 60 kg woman stands up in a 120 kg canoe of length 5m. She walks 1 m from one end to 1m from the other end. Ignoring water resistance, find the displacement of canoe.
A
– 1 m
B
– 1.5 m
C
– 2 m
D
None of these
Answer
– 1 m
Explanation
Solution
Fext = 0, ∴ COM will remain unchanged.
Hence, 60 × 3 = - 180, x or x = - 1m
