Suppose u balance a 5kg ball on the tip of ur finger,which has an area of 1cm2 .what is the pressure on ur finger?
Pressure is defined as force per unit area...
Shortly, the answer:
Pressure is equal to 490kPa.
ሶሊ, Do you need explanation?
To calculate the pressure on your finger, we can use the formula:
Pressure = Force / Area
First, we need to calculate the force acting on your finger, which is the weight of the ball. The weight of an object is given by the formula:
Weight = mass x acceleration due to gravity
Given that the mass of the ball is 5 kg and the acceleration due to gravity is approximately 9.8 m/s^2, we can calculate the weight:
Weight = 5 kg x 9.8 m/s^2
= 49 N
Now, we can calculate the pressure by dividing this force by the area of your finger:
Pressure = 49 N / 1 cm^2
However, we need to convert the area to square meters since the SI unit for pressure is Pascal (Pa), which is equal to N/m^2.
1 cm^2 is equal to 0.0001 m^2, so we can now calculate the pressure:
Pressure = 49 N / 0.0001 m^2
= 490,000 Pa
Therefore, the pressure on your finger is 490,000 Pascal (Pa).