An elastic spring under tension of 3 ~N has a length a . Its length is b under tension 2 ~N . For its length (3 a-2 b) , the value of tension will be______ N .

Step-by-step solution

aligned & 3= K ( a - ) & 2= K ( b - ) & T = K (3 a -2 ~b - ) & T = K (3( a - )-2( ~b - ) & = K [3 ( 3 ~K )-2 ( 2 ~K ) ] & =9-4 & =5 ~N aligned