Question: A rectangular glass plane (height 10 cm, breadth 8 cm, and thickness = 0.2 cm) rests with the largest face flat on the surface

A rectangular glass plane (height 10 cm, breadth 8 cm, and thickness

A rectangular glass plane (height 10 cm, breadth 8 cm, and thickness = 0.2 cm) rests with the largest face flat on the surface of the water. Calculate the additional force required to pull the plane clear of the water. What is the force due to surface tension acting on the plane it is held vertically with the edge of the longest side just touching the water surface? Surface Tension of water = 0.070 N/m.

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