A barbell consists of two point masses connected by a light rod of length
PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A barbell consists of two 0.50kg point masses connected by a light rod of length 0.60m. A safety specification states that the rotational inertia about any axis perpendicular to the rod must be less than 0.18kg⋅m2. Two candidate axes are considered, both perpendicular to the rod and located at distances measured along the rod from its center:
• Axis A is 0.20m from the center.
• Axis B is 0.35m from the center.
Which option correctly identifies whether each axis satisfies the specification?
(a) Both axes satisfy the specification.
(b) Only axis A satisfies the specification.
(c) Neither axis satisfies the specification.
(d) Only axis B satisfies the specification.