The train travels at a speed of 72 km / h along the curve of the road.
| February 24, 2021 | education
The train travels at a speed of 72 km / h along the curve of the road. Determine the radius of the arc if the centripetal acceleration of the train is 5 m / s2.
V = 72 km / h = 20 m / s.
a = 5 m / s ^ 2.
R -?
The radius of curvature of the road is expressed from the formula for centripetal acceleration: a = V ^ 2 / R.
R = V ^ 2 / a.
R = (20 m / s) ^ 2/5 m / s ^ 2 = 80 m.
Answer: R = 80 m.
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