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question 1 - Suppose that the Lo = 661 m main span of a steel bridge...

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Physics

question 1 -

Suppose that the Lo = 661 m main span of a steel bridge had noexpansion joints. How much longer would the bridge be if thetemperature increased from a cold winter at Tcold = –32 oC to awarm summer at Twarm = 30 oC? (The coefficient of linear expansionfor steel is (alpha) α = 11 . 10-6 1/Co.)

question 2 -

A ball rolls along a surface, starting with an initial velocityof vo = 59 m/s. Friction reduces the ball's finalvelocity to vf = 12 m/s in a time of t = 2.7 s.
Determine the ball's acceleration a (type it as a negative numberbecause it reduced the ball's velocity).

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3.6 Ratings (555 Votes)
Q 1Here we have given thatThe initial length of the bridge at cold winterThe temperature at cold    See Answer
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