JEE Main Physics question

Statement 1: There are two propellers in a helicopter. Statement 2: Angular momentum is conserved.

(A)Assertion is True, Reason is True; Reason is the correct explanation for AssertionCorrect
(B)Assertion is True, Reason is True; Reason is NOT the correct explanation for Assertion
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is True

Answer: (A)

Solution

A single spinning rotor would, by conservation of angular momentum, cause the helicopter's body to spin in the opposite sense to the rotor (since the system starts with zero total angular momentum). Helicopters use

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-158785