A train traveling at a constant speed rounds a curve of radius 225 m . A lamp suspended from the ceiling swings out to an angle of 14.5 ∘ throughout the curve. What is the speed of the train?

Explanation:

Given

Required: Determine the speed of the train

To solve this question, we apply the concept of tension.

Let the tension on the cord be T.

Tension is calculated as:

So, the tensions acting on the system are:

and

Divide the equations by one another

Make v^2 the subject

Take the square root of both sides

Substitute values for g (9.8), r 225 and (14.5)

Hence, the trains' velocity is approximately 23.88m/s

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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54 degrees incident angle = reflected angle

angle is from normal turned to line of ray