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evablogger [386]

2 years ago

6

What's the best way to find the load capacity of a crane?

1 answer:

Korvikt [17]2 years ago

5 0

Answer:

weight

Explanation:

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Scorpion4ik [409]

Answer:

$F_r = 40.01N$

Explanation:

Given

Let the two forces be $F_1\ and\ F_2$

$F_1 = 80N$

$F_2 = 70N$

$\theta = 150\deg$

Required

Determine the resultant force $F_r$

This will be solved using parallelogram law of resultant force.

The equation is:

$F_r^2 = F_1^2 + F_2^2 + 2F_1F_2cos\theta$

Substitute values for $F_1$ , $F_2$ and $\theta$

$F_r^2 = 80^2 + 70^2+ 2 * 70 * 80 * cos\ 150$

$F_r^2 = 6400 + 4900 + 11200* cos\ 150$

$F_r^2 = 6400 + 4900 + 11200* -0.8660$

$F_r^2 = 6400 + 4900 - 9699.2$

$F_r^2 = 1600.8$

Take the square root of both sides

$F_r = \sqrt{1600.8$

$F_r = 40.01N$

<em>Hence, the resultant force is 40.01 N</em>

3 0

3 years ago

On a given day, a barometer at the base of the Washington Monument reads 29.97 in. of mercury. What would the barometer reading

Umnica [9.8K]

Answer:

The barometer reading will be 29.43 in

Explanation:

Using the formula of pressure variation

p2 - p1 = -yair * H

= 7.65 * $10^{-2} \frac{lb}{ft^{3} } * 500 ft\\$

= 38.5 $\frac{lb}{ft^{2} }$

According to the relationship between the pressure and the height of the mercury column

p = yHg * h --> where yHg and h is the barometer reading

yHg $(\frac{29.97}{12} ft)$ - yHg * h1 = 38.5 $\frac{lb}{ft^{2} }$

h1 = ( $\frac{29.97}{12} ft$ ) - $\frac{38.5 \frac{lb}{ft^{2} } }{847 \frac{lb}{ft^{3} } }$

$[(\frac{29.97}{12} ft) - 0.0455 ft] - 12 \frac{in}{ft} \\\\h1 = 29.43 in$

8 0

4 years ago

If you know that the change in entropy of a system where heat was added is 12 J/K, and that the temperature of the system is 250

SVEN [57.7K]

Solution:

Given:

Change in entropy of the system, ΔS = 12J/K

Temperature of the system, $T_{o}$ = 250K

Now, we know that the change in entropy of a system is given by the formula:

ΔS = $\frac{\Delta Q}{T_{o}}$

Amount of heat added, ΔQ = $\Delta S\times T_{o}$

ΔQ = 3000J

3 0

3 years ago

As soldiers get bigger and packs get heavier, a parachutist and load can weigh as much as 490 lbf. The standard 28-ft parachute

vovangra [49]

Answer:

hmmmmm...

Explanation:

8 0

3 years ago

Every six to eight months, you should check the level of the fluids underneath the hood of your vehicle.

SVETLANKA909090 [29]

Answer:

True

Explanation:

8 0

3 years ago

Read 2 more answers