A rectangular glass plate of dimensions 5 cm `xx` 4 cm is placed flat on the surface of water. Find the downward force on the plate due to surface tension. Given surface tension of water = 0.073 N `m^(-1)`

A rectangular plate of dimension 6 cm xx 4cm and thickness 2mm is placed with its largest face flat on the surface of water. Find the downward force on the plate due to surface tension. Surface tension of water is 7.0 xx 10^(-2)Nm^(-1) .

A rectangular plate of dimensions 6cm xx 4 cm and thickness 2 mm is placed with its largest face flat on surface of water . (i) What is the downward force on the plate due to surface tension ? Surface tension of water =7.0 xx10^(-2) "Nm"^(-1) (ii) If the plate is placed vertical so that the longest side just touches the water surface, find the downward force on the plate.

A rectangular frame having dimensions "8 cm "xx " 4 cm " and width of 3 mm is initially placed with its largest face flat on water surface. Calculate the downward force acting on the frame due to surface tension of water ("Surface tension of water "= 7.2 xx 10^(-4)"Ncm"^(-1))

A needle of length 5 cm is floating on the surface of water. Calculate the minimum force needed to lift the needle above the aurface of water. Surface tension of water is 0.073 N/m.

A circular plate of radius 4 cm and weight W is made to rest on the surface of water. If a minimum pull of W + F is required to clear the plate off the water surface then find F. Given surface tension of water S_(w) = 0.072 N m^(-1)

A circular plate of radius 4 cm and weight W is made to rest on the surface of water. If a minimum pull of W + F is required to clear the plate off the water surface then find F. Given surface tension of water S_(w) = 0.072 N m^(-1)

Find the excess pressure inside a liquid drop of radius 2 cm, if the surface tension of water is 0.073 N m^(-1)