A stone weighs 500 N.Calculate the pressure exerted by it if it markes a contact with a surface of area `25 cm^2`.

A 100 W light bulb is placed at the centre of a spherical chamber of radius 20cm. Assume that 60% of the energy supplied to the bulb is converted into light and that the surface of the chamber is perfectly absorbing. Find the pressure exerted by the light on the surface of the chamber.

Calculate the pressure exerted by the foot of an elephant using the following data. Average weight of an elephant is 4000 N. Surface area of the sole of its foot is 0.1m^(2) .

What will be the force required tp exert a pressure of 20,000 Pa on an area of 1 cm^2 .

If the lateral surface area of a cube is 600cm^(2) , then the total surface area is

Figure shows a uniform rod of length 30 cm having a mass of 3.0 kg. The strings shown in the figure are pulled by constant forces of 20 N and 32N. Find the force exerted by the 20 cm part of the rod on the 10 cm part. All the surfaces are smooth and the strings and the pulleys are light.

Calculate the area of a 1500 N object that exerts a pressure of 500 Pa.