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Eddi Din [679]
3 years ago
10

What is the attractive force between all matter in the universe?

Physics
2 answers:
kvv77 [185]3 years ago
4 0
The attractive force between all matter in the universe is gravity.
Sholpan [36]3 years ago
3 0

Answer:

Gravitational force

Explanation:

As we know that there are four fundamental force in nature

1) Gravitational Force : It is always attraction type of force which exist between two objects of different masses.

2) Electromagnetic force : It may be of attraction or repulsion type of force depends on the charge or pole of the given object.

3) Weak or strong nuclear force : This force depends on the distance between the particles. For a certain range of distance this force is of attraction type force while for other range it is repulsion type of force.

So here from above description we know that only gravitation force is the attraction type of force for all conditions so here correct answer will be

Gravitational Force

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Answer:

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Explanation:

in this question we have given

mass of bucket=20kg

mass of rope=.2\frac{kg}{m}

height of building= 15 meter

We have to find the work done lifting the bucket (sand and rope) to the building =work done in lifting the rope + work done in lifting the sand

work done in lifting the rope is given as,W_{1}=Force \times displacement

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=.1\times 15^2

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work done in lifting the sand is given as,W_{2}=Force \times displacement

W_{2}=\int\limits^{15}_0 F \, dx.................(2)

Here,

F=mx+c

here,

c=20-18

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m=\frac{20-18}{15-0}

m=.133

Therefore,

F=.133x+2

Put value of F in equation 2

W_{2}=\int\limits^{15}_0 (.133x+2) \, dx

W_{2}=.133 \times 112.5+2\times15\\W_{2}=14.96+30\\W_{2}=44.96 Nm

Therefore,

work done lifting the bucket (sand and rope) to the top of the building,W=W_{1}+W_{2}

W=22.5 Nm+44.96 Nm

W=67.46 Nm

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