Question

С какой силой автомобиль массой 1 т давит на середину выпуклого моста, имеющего радиус кривизны 50м? Скорость автомобиля 72 км/ч

Answer 1

V=72км\ч=20 м\с
F= m( g-a) = m(  g- V^2/ R)
F= 1000кг * ( 10 -  400/50)=1000 ( 10- 8)=2000 Н

Answer 2

Calculation of the Force Exerted by the Car on the Bridge

To calculate the force exerted by the car on the bridge, we need to consider the centripetal force acting on the car as it moves along the curved bridge. The centripetal force is responsible for keeping the car moving in a curved path and is given by the equation:

F = (m * v^2) / r

Where: - F is the centripetal force - m is the mass of the car - v is the velocity of the car - r is the radius of curvature of the bridge

Given: - Mass of the car = 1 ton = 1000 kg - Velocity of the car = 72 km/h = 20 m/s - Radius of curvature of the bridge = 50 m

Substituting these values into the equation, we can calculate the force exerted by the car on the bridge:

F = (1000 kg * (20 m/s)^2) / 50 m

Calculating the expression inside the parentheses first:

F = (1000 kg * 400 m^2/s^2) / 50 m

Simplifying:

F = 8000 N

Therefore, the force exerted by the car on the bridge is 8000 Newtons.