Question

Автомобильный прицеп массой 2,5 т,стоит на земле на четырех колесах.площадь соприкосновения каждого колеса с дорогой равна 125 см квадратных .определите давление прицеп а на землю.(даю 15баллов срочно )

Answer 1

S=125*4=500cм2=0,05м2, F=P=m*g=2500*10=25000H?
p=F/S=25000/0,05=500000Па

Answer 2

Calculation of Pressure

To determine the pressure exerted by the trailer on the ground, we need to divide the force exerted by the trailer by the area of contact between the wheels and the road.

Given: - Mass of the trailer = 2.5 tons = 2500 kg - Area of contact of each wheel with the road = 125 cm^2

To calculate the pressure, we need to convert the area from cm^2 to m^2. Since 1 m^2 = 10,000 cm^2, the area of contact for each wheel is 125 cm^2 / 10,000 = 0.0125 m^2.

Next, we need to calculate the force exerted by the trailer on the ground. The force can be calculated using Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a). In this case, the acceleration is due to gravity, which is approximately 9.8 m/s^2.

So, the force exerted by the trailer on the ground is: Force = mass * acceleration = 2500 kg * 9.8 m/s^2 = 24,500 N.

Now, we can calculate the pressure: Pressure = Force / Area = 24,500 N / 0.0125 m^2 = 1,960,000 Pa.

Therefore, the pressure exerted by the trailer on the ground is approximately 1,960,000 Pa.

Please note that this calculation assumes that the weight of the trailer is evenly distributed among the four wheels and that the wheels are in contact with the ground.