a car with 4 wheels has the tyres at a pressure of 20N/cm2. Each tyre of 100cm2 in contact with the road. what is the weight of the car.
1 m^2 = 10,000 cm^2
20 * 10,000 = 200,000 N/m^2
400 cm^2 = 400/10,000 = .04 m^2
200,000 * .04 = 2000*4 = 8,000 N
of weight
about 800 kg mass if g = about 10m/s^2, small car :)
To find the weight of the car, we need to first understand the relationship between pressure, force, and area. Pressure is defined as force per unit area, which means it is the force applied over a given area. The formula for calculating pressure is:
Pressure = Force / Area
In this case, the pressure is given as 20 N/cm2, and the area of each tire in contact with the road is 100 cm2. Now we can rearrange the formula to solve for the force:
Force = Pressure x Area
Substituting the given values:
Force = 20 N/cm2 * 100 cm2
Now we can calculate the force exerted by each tire on the road:
Force = 2000 N
There are four tires on the car, so to find the total weight of the car, we need to multiply the force by the number of tires:
Weight = 4 * 2000 N
Weight = 8000 N
Therefore, the weight of the car is 8000 Newtons.