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3 years ago

If you lift one load up two stories, how much work do you do compared to lifting one load up only one story?

Physics

1 answer:

Tatiana [17]3 years ago

7 0

Answer:

D)Twice as much

Explanation:

Work: This is the product of force and distance along the direction of the force. The S. I unit of work is Joules (J)

Energy: Energy is the ability or the capacity to perform work. Energy and work can be interchange during calculation.

E = W = mgh.................................... Equation 1

Where m = mass of the load, h = height of one story, g = acceleration due to gravity.

constant: g = 9.8 m/s²

When the load is lift up only one story

W = 9.8mh..................... Equation 2

But when the load is lifted through two story,

height = 2h

W = 19.6mh .................... Equation 3

Comparing Equation 2 and equation 3,

It shows that the work done to lift the load up two story is twice the work done to lift the load up one story.

The right option is D)Twice as much

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Answer:

Explanation:

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2 years ago

A uniform disk, a thin hoop, and a uniform sphere, all with the same mass and same outer radius, are each free to rotate about a

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Answer:

4 hoop, disk, sphere

Explanation:

Because

We are given data that

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So let

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And Time = t

Also let

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So let's find the inertia shall we!!

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= 0.4 mr²

ωf = ωi + α t

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Order of ωf: ( least to greatest)

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Option - 4

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3 years ago

Can you do it for me pls thank and if you do I mark you brainlies

Art [367]

Answer:

800pa

Explanation:

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2 years ago

What percentage of energy is available to organisms at each level of an energy pyramid?

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3 years ago

While Bob is demonstrating the gravitational force on falling objects to his class, he drops an 1.0 lb bag of feathers from the

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In the experiment of free fall bob released a bag of mass 1 lb

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a = 9.8 m/s^2

now we will use kinematics equation here for finding the distance of free fall

$d = v_i * t + \frac{1}{2} at^2$

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3 years ago