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2 years ago

13

What length of rope must the operator pull and

1 answer:

sergiy2304 [10]2 years ago

8 0

The length of rope that the operator must pull is 3m.

<h3>What is the mechanical advantage?</h3>

The term mechanical advantage refers to the ratio of the load to the effort. We know that the efficiency of an ideal machine is 100%. This implies that;

VR = MA

VR = distance moved by load/distance moved by effort

We should know that the mechanical advantage is equal to the number of pulleys present in the system. In this case, we can see that the load carried is 15 N.

Hence;

Recall that MA = number of pulleys

3 = distance moved by load/1

distance moved by load = 3 m

Learn more about mechanical advantage:brainly.com/question/16617083

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3 years ago

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Answer:

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Explanation:

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3 years ago

Light of wavelength 656 nm and 410 nm emitted from a hot gas of hydrogen atoms strikes a grating with 5300 lines per centimeter.

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Answer:

$20.32^{\circ}$ and $44.08^{\circ}$

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Explanation:

$\lambda$ = Wavelength

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We have the relation

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m = 1

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The first and second order angular deflection is $20.32^{\circ}$ and $44.08^{\circ}$

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m = 2

$\theta=\sin^{-1}\dfrac{2\times 410\times 10^{-9}}{0.0001886\times 10^{-2}}\\\Rightarrow \theta=25.77^{\circ}$

The first and second order angular deflection is $12.56^{\circ}$ and $25.77^{\circ}$ .

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