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3 years ago

5

A 11.8-m-long steel [E = 206 GPa] pipe column has an outside diameter of 202 mm and a wall thickness of 5 mm. The column is supp

orted only at its ends and it may buckle in any direction. Calculate the critical load Pcr for the following end conditions:

1 answer:

Nostrana [21]3 years ago

7 0

Answer:

A

Explanation:

i took the test pimp

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Answer:

The distance by the ball clear the crossbar is 1.15 m

Explanation:

Given that,

Distance = 44 m

Speed = 24 m/s

Angle = 31°

Height = 3.05 m

We need to calculate the horizontal velocity

Using formula of horizontal velocity

$u_{x}=u\cos\theta$

Put the value into the formula

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We need to calculate the vertical velocity

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$u_{y}=u\sin\theta$

Put the value into the formula

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$u_{y}=12.3\ m/s$

We need to calculate the time

Using formula of time

$t=\dfrac{d}{u_{x}}$

Put the value into the formula

$t=\dfrac{44}{20.5}$

$t=2.1\ sec$

We need to calculate the vertical height

Using equation of motion

$h=u_{y}t+\dfrac{1}{2}at^2$

Put the value into the formula

$h=12.3\times2.1-\dfrac{1}{2}\times9.8\times(2.1)^2$

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Using formula for vertical distance

$d=h-3.05$

Put the value of h

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$d=1.15\ m$

Hence, The distance by the ball clear the crossbar is 1.15 m

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