Table weight 2 kg Determine its pressure on the floor if the area of each leg is 4 cm², there are only 4 legs.
g = 10 m / s2.
m = 2 kg.
n = 4.
S1 = 4 cm2 = 0.0004 m2.
P -?
Pressure P is a scalar value that shows what force F acts on a unit area S. Pressure is determined by the formula: P = F / S.
The table acts on the floor by the force of its weight F, the value of which is determined by the formula: F = g * m, where g is the acceleration of gravity, m is the mass of the body.
The weight of the table F is distributed over the area of contact of the legs with the floor S. Since the table has n legs, and the area of contact of each is S1, the weight of the table is distributed over the area S = n * S1.
The formula for determining the table pressure will be: P = g * m / n * S1.
P = 10 m / s2 * 2 kg / 4 * 0.0004 m2 = 12500 Pa.
Answer: the table pressure on the floor is P = 12500 Pa.