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Tanya [424]
3 years ago
12

A mass of 10 kg is at a point A on the table. It moved to a point B. If the line joining A and B is horizontal. What is the work

done on the object by the gravitational force ? Explain your answer
Physics
1 answer:
elena55 [62]3 years ago
6 0

Answer:

Work done by gravitational force = 0 joule

Explanation:

Work done is given by the relation

                        W  =  F   x    S   joule

Where,    F  -  the force applied in the form of push or pull

               S  -  displacement caused by the force

If a force is acting on a body and it doesn't cause any displacement, then work done will be zero.

Gravitational force acts on the body even if the body is at rest.

<em>Work done by the gravitational is applicable only if there is some vertical component of motion involved.</em>

In this case, some amount of work is done to move the body from point A to B.But, the body is displaced in the horizontal direction. No vertical motion is involved.

So, the work done due to gravitational force on a mass is zero joule.

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krek1111 [17]
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k = -1/25.

-1/25 - 2/5 = 11k is true.
6 0
3 years ago
On a certain planet, which is perfectly spherically symmetric, the free-fall acceleration has magnitude g = go at the north pole
ohaa [14]
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I attached a diagram that shows how this force aligns with the force of gravity.
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g=g_0-g_0(a-1)cos^2(\alpha)
Colatitude is:
\alpha_c=90^\circ-\alpha
The answer is:
g=g_0-g_0(a-1)cos^2(90-9)=g_0-g_0(a-1)sin^2(9)

5 0
3 years ago
A balloon of mass M is floating motionless in the air. A person of mass less than M is on a rope ladder hanging from the balloon
Tasya [4]

Let the mass of the person be m. Total momentum is conserved (because the exterior forces on the system are balanced), especially the component in the vertical direction.

Given that,

Mass of gallon is M

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When the person begin to move we have

Conservation of momentum

mv + MVb=0

MVb=-mv

Vb= -(m/M) v

Given that the mass of man is less than mass of balloon. i.e. m<M

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Therefore, .

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6 0
3 years ago
Read 2 more answers
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tia_tia [17]
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4 0
3 years ago
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charle [14.2K]

Answer:

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Explanation:

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3 0
3 years ago
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