Question

The pulleys and string shown in figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle θshould be

• A. 0⁰
• B. 30⁰
• C. 45⁰
• D. 60⁰

Answer 1

Answer: (C)

45⁰

Answer 2

Here T = mg………. (i)

and 2T cos θ = $( \sqrt { 2 } \mathrm {~m} )$ g ………. (ii)

(

Dividing (ii) by (i)

cos θ = $\frac { 1 } { \sqrt { 2 } }$ or θ = 45⁰