Question

Автомобиль массой 5 т проходит по вогнутыми мосту с радиусом кривизны в 45 м со скоростью 54 км/ч . С какой силой он давит на мост в его середине​

Answer 1

Ответ:

с большой

Обьяснение в ответах

Answer 2

Calculation of the Force Exerted on the Bridge

To calculate the force exerted on the bridge by the car, we need to consider the centripetal force acting on the car as it moves along the curved bridge. The centripetal force is directed towards the center of the circular path and is equal to the mass of the car multiplied by the centripetal acceleration.

The centripetal acceleration can be calculated using the formula:

a = v^2 / r

Where: - a is the centripetal acceleration - v is the velocity of the car - r is the radius of curvature of the bridge

Given that the car has a mass of 5 tons (5000 kg), is moving at a speed of 54 km/h, and the radius of curvature of the bridge is 45 m, we can calculate the centripetal acceleration.

Converting the speed from km/h to m/s: 54 km/h = 54 * (1000/3600) m/s = 15 m/s

Plugging the values into the formula: a = (15 m/s)^2 / 45 m = 5 m/s^2

Now that we have the centripetal acceleration, we can calculate the force exerted on the bridge using Newton's second law:

F = m * a

Where: - F is the force exerted on the bridge - m is the mass of the car - a is the centripetal acceleration

Plugging in the values: F = 5000 kg * 5 m/s^2 = 25000 N

Therefore, the car exerts a force of 25000 Newtons on the bridge at its midpoint.