A 100kg block rests on a table.
The area of contact between the block and the table is 4m2.
Calculate the pressure.
To calculate the pressure, we need to divide the force acting on the surface by the area of contact. In this case, the force acting on the surface is the weight of the block.
The weight of an object is given by the formula: weight = mass x acceleration due to gravity.
In this case, the mass of the block is given as 100 kg. The acceleration due to gravity is approximately 9.8 m/s^2.
So, the weight of the block can be calculated as: weight = 100 kg x 9.8 m/s^2.
Now, we divide the weight by the area of contact, which is given as 4 m^2.
Therefore, the pressure can be calculated as: pressure = weight / area of contact = (100 kg x 9.8 m/s^2) / 4 m^2.
Now, let's calculate the pressure:
Pressure = (100 kg x 9.8 m/s^2) / 4 m^2
Pressure = 980 N / 4 m^2
Pressure = 245 Pascal (Pa)
So, the pressure exerted by the 100 kg block resting on the table is 245 Pa.