a thin wire is bent in the form of a rectangle of length 4 cm and breadth 3 cm. what force do the sides experience when a soap film is formed in the frame ?S.T. =0.03N/m
 

Hello Priya Rathi dear, force F = 2 * T * l ( since two sides of film)
T = 0.03 N/m and length = 4 cm = 0.04 m
Hence force on each length side = 2.4 * 10^-3 N
On each breadth side = 1.8 * 10^-3 N

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