Manipal MET2019PhysicsWork, Power and Energy
A particle is moving in a vertical circle. The tensions in the string when passing through two positions at angles 30^ and 60^ from vertical (lowest positions) are T₁ and T₂ , respectively. Then
Options
- AT₁=T₂
- BT₂ T₁
- CT₁ T₂
- Dtension in the string always remains the same
Correct answer
C. T₁ T₂
Step-by-step solution
Tension, ( T = mv ^2 r + mg ) For ( =30^ ) ( aligned & T ₁= mv ^2 r + mg 30^ & = mv ^2 r + 3 2 mg aligned ) For ( =60^ ) ( aligned & T ₂= mv ^2 r + mgcos ^ 60^ & mv ^2 r + 1 2 mg & ~T ₁ > T ₂ aligned )