Question

A square plate of side 15 cm is floating on the
surface of water. If the surface tension of water
is 60 dyne/em., the excess force applied to separate
this plate from water will be​

Answer 1

Answer: l - length of surface in contact

Explanation:

T = f / 4l

60= f/4 *15

f= 60 * 60

= 3600 dyne