Home/
Competitive Exams/
NEET/
Physics/
System of Particles & Rotational Motion/
Question 6142
NEET Physics · Hard

System of Particles & Rotational Motion: Torque MCQ

Solve this quality-checked NEET multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
TorqueHardQuestion 6142

Question

Torque due to gravity on a uniform rod (M, L) pivoted at one end, making angle θ with vertical:
  1. A
    MgL sinθ
  2. B
    MgL cosθ
  3. C
    MgL sinθ/2
    Correct
  4. D
    MgL cosθ/2

Correct answer

MgL sinθ/2

Explanation

Gravity acts at L/2 from pivot. Perpendicular distance = (L/2)sinθ. τ = Mg×(L/2)sinθ = MgL sinθ/2.

Review System of Particles & Rotational Motion notesStart timed chapter practice