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enot [183]
3 years ago
12

State the relationship between the mass of trolley and acceleration of the trolley?

Physics
1 answer:
kogti [31]3 years ago
5 0

<em>Answer</em><em>:</em><em> </em> The complementary relationship indicated by the Newton's second law...

For a given applied force the acceleration of the trolley is inversely proportional to it's mass.

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A 350-N child is in a swing that is attached to a pair of ropes 2.10 m long. Find the gravitational potential energy of the chil
o-na [289]

Answer:

a)  U = 735 J , b) U = 125.7 J , c)   U = 0 J

Explanation:

The gravitational power energy is

      U = mg y - mg y₀

The last value is a constant, for simplicity we can make it zero, if the lowest point is at the origin of the coordinate system, which in this case we will place in the lowest part

a) Rope is horizontal

The height in this case is the same length of the rope

     y = 2.10 m

    w = mg = 350 N

    U = 350 2.10

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b) when the angle is 34º

     y = L - L cos 34

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    y = 2.10 (1- cos 34)

    y = 0.359 m

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    U = 125.7 J

c) in this case this point coincides with the reference system

     y = 0

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4 0
3 years ago
What is the kinetic energy of a ball that has a mass of 3kg and Is<br> moving at 5m/s?
Arada [10]

Answer:

E kin = 1/2 • m • v^2

E kin: kinetic energy

m: mass

v: velocity

Explanation:

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2 years ago
Which statement best describes the benefits that would make the investment worthwhile?
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A 7300 N elevator is to be given an acceleration of 0.150g by connecting it to a cable of negligible weight wrapped around a tur
Firlakuza [10]

Answer:

α =18.75  rad/s²

Explanation:

Given that

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Lets take angular acceleration =α rad/s²

As we know that

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Now by putting the values

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Anestetic [448]

Answer:

A. 20 N

Explanation:

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