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- Marked Questions may have more than one correct option.1. The pulleys and strings shown in the figure are smooth and ofnegligible mass for the system to remain in equilibrium, theangle θ should beJEE 2002 (Scr.), 3/105(A) 0°(B) 30°(D) 60°(C)45Goure is in equilibrium and at rest. The spring and string are |
Answer» <p>45°The Tension in the string is mg as no acceleration T-mg=m(0) =>T=mg. Next the component of T i.e. Tcos(theta)Balance √2mg since both sides of the system are symmetrical then 2Tcos(theta)=√2mg =>2mgcos(theta)=√2mgCos(theta )=1/√2=>theta =45°</p> | |