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Tema [17]
3 years ago
6

Why might compound gear trains be better than two gears alone?

Physics
1 answer:
mina [271]3 years ago
4 0

Answer:

the answer is there is more separation for the vitality to exchange; with just two apparatuses, all the vitality is applied on a shorter separation.  

Explanation:

Work done and vitality moved are estimated in joules (J). The work done on a protest can be figured if the power and separation moved are known. An adjustment in energy happens when a power is connected to a question that is moving or can move.Pulleys are ground-breaking straightforward machines. They can alter the course of a power, which can make it significantly simpler for us to move something. On the off chance that we need to lift a protest that gauges 10 kilograms one meter high, we can lift it straight up or we can utilize a pulley, so we can pull down toward one side to lift the question up.

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an elevator mass of 7700 kg falls from a height of 32 m after a sudden failure in the hoisting cable. The mass is stopped by a s
valkas [14]

Answer:k=28.29 kN/m

Explanation:

Given

mass m =7700 kg

height from which Elevator falls h=32 m

Let x be the compression in the spring

thus From conservation of Energy Potential energy will convert in to Elastic Potential Energy of spring

\frac{kx^2}{2}=mg(h+x)----------1

also maximum acceleration is 5g

thus

mg-kx=ma

here a=-5g

kx=mg-m(-5g)=6mg

x=\frac{6mg}{k}

Substitute x in equation 1

0.5\times k\times (\frac{6mg}{k})^2=mg(h+\frac{6mg}{k})

18\frac{(mg)^2}{k}=mgh+6\frac{(mg)^2}{k}

k=12\cdot \frac{mg}{h}

k=12\times \frac{7700\times 9.8}{32}

k=28.29 kN/m

4 0
3 years ago
Manuel is holding a 5 kg box. How much force us the box exerting on him? in what direction
Free_Kalibri [48]
It will be 49 Newtons of force in the down direction. To find the force in newtons, you multiply the mass (5 kg) by the gravity (which if 9.8). 
3 0
3 years ago
How do climate differences affect the movement at the Mariana Trench
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It pushes the currents to opposite sides
8 0
3 years ago
What does the triad color scheme include?
Ainat [17]
I think it's C, three hues that are adjacent on the color wheel
3 0
3 years ago
11. Reflecting telescopes are popular because they're _______ than a refracting telescope.
Anon25 [30]
I do not know what the school expects as an answer, but advantage of reflecting telescopes is that there is only one major reflecting surface, so it is quite easy to create a 6 or 8 inch telescope by an amateur, after adding on a prism and an eyepiece.  (a microscope eyepiece could be used).
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Electromagnetic waves all have the same velocity in the same medium.  However, since frequencies vary widely, so do wavelengths.

4 0
2 years ago
Read 2 more answers
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