A car weighing 3 tons passes the middle of a convex bridge with a radius of 75 m
| September 6, 2021 | education
A car weighing 3 tons passes the middle of a convex bridge with a radius of 75 m at a speed of 25 m / s. The strength of the car in the middle of the bridge.
Initial data: m (vehicle weight) = 3 tons (3 * 10 ^ 3 kg); R (radius of the convex bridge) = 75 m; V (the speed that the car will have in the middle of the bridge) = 25 m / s.
Constants: by condition g (gravitational acceleration) ≈ 10 m / s2.
The pressure force of the vehicle in question in the middle of the bridge is determined by the formula: P = m * (g – an) = m * (g – V ^ 2 / R).
Calculation: P = 3 * 10 ^ 3 * (10 – 25 ^ 2/75) = 5000 N (5 kN).
Answer: A. The pressure force of the vehicle in question in the middle of the bridge is 5 kN.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
