Question

Name two constants having same dimensions

Answer 1

I think planck constant and gravitational constant

Answer 2

The answer is surface tension. 

You can see the definitions of force constant and surface tension.

Force constant of a spring : It is defined by the restoring force developed in the spring per unit change in the length of the spring. The unit of it is N/m.

Surface tension: it is defined by the force exerted by molecules on one side of an imaginary line of unit length on the free surface of liquid on the molecules on the other side of the line.The unit is N/m. The force we have mentioned here is parallel to the free surface and perpendicular to the imaginary line of unit length on the free surface of liquid.

You may take surface energy which is defined by the sum of potential energy per unit area (which is work done to create free surface of unit area)and heat energy that is given to surface to keep the temperature constant during creation of new surface of unit area. The unit is J/m^2=Nm/m^2=N/m.

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