Question

can anyone please answer

Answer 1

as kx is acceleration

so it's T^-2 THAT IS (2)

Answer 2

~*HEY FRIEND*~
~* THE ANSWER OF YOUR QUESTION IS..*~

✍✍✍✍✍✍✍✍________________________________________b

DOUBLE DIFFERENTIATION OF DISTANCE IS ACCELERATION..
..AND AS U KNOW ONLY DIMANSIONALLY SAME QUANTITY IS ADDED AND SUBSTRCTED....

SO DIMENSION OF K = DIMENSION OF ACCELERATION....I.e
option( 3).. LT^-2...

HOPE IT WILL HELP YOU