question_answer

If a street light of mass M is suspended' from the end of a uniform rod of length L in different possible patterns as shown in below figure then cable

A)  pattern A is more steady

B)  pattern B is more steady

C)  pattern C is more steady

D)  All will have same steadiness

Correct Answer: A

Solution :

Equilibrium of street light \[mg\,\times \,x=T\times \,y\,or\,T=\frac{mgx}{y}\] For T to be minimum y should be maximum Hence pattern A is more steady.