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lesya [120]
3 years ago
11

How does the force of gravity exerted

Physics
1 answer:
givi [52]3 years ago
8 0

The two forces of gravity are equal

Explanation:

We can answer this question by applying Newton's third law of motion, which states that:

"When an object A exerts a force (called action) on an object B, then object B exerts an equal and opposite force (called reaction) on object A"

In this problem, we can identify the Sun as object A and the Earth as object B. This means that the force of gravity exerted by the Sun on the Earth is the action, while the force of gravity exerted by the Earth on the Sun is the reaction: according to Newton's third law, these two forces are equal and opposite.

Therefore, the two forces of gravity are equal in magnitude, which is given by:

F=\frac{GMm}{r^2}

where

G is the gravitational constant

M is the mass of the Sun

m is the mass of the Earth

r is the separation between the Earth and the Sun

Learn more about Newton's third law:

brainly.com/question/11411375

#LearnwithBrainly

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A copper wire of diameter 0.80 mm fails at an engineering stress = 248.2 MPa. Its ductility is measured as 75% reduction of area
Anvisha [2.4K]

Answer:

true stress = 992.8 MPA

true strain = 1.386

Explanation:

see the attached file

4 0
3 years ago
At what height above the ground must a mass of 10 kg be to have a potential energy equal in value to the kinetic energy possesse
Paladinen [302]

Answer:

20 m

Explanation:

We'll begin by calculating the kinetic energy of the mass. This can be obtained as follow:

Mass (m) = 10 kg

Velocity (v) = 20 m/s

Kinetic energy (KE) =?

KE = ½mv²

KE = ½ × 10 × 20²

KE = 5 × 400

KE = 2000 J

Finally, we shall the height to which the mass must be located in order to have potential energy that is the same as the kinetic energy. This can be obtained as follow:

Mass (m) = 10 kg

Acceleration due to gravity (g) = 10 m/s²

Potential energy (PE) = Kinetic energy (KE) = 2000 J

Height (h) =..?

PE = mgh

2000 = 10 × 10 × h

2000 = 100 × h

Divide both side by 100

h = 2000 / 100

h = 20 m

Thus, the object must be located at a height of 20 m in order to have potential energy that is the same as the kinetic energy.

5 0
3 years ago
Whats is the purpose of the
snow_lady [41]

here's your correct answer.. please copy it..

3 0
3 years ago
2. Predict what will happen if the 80 kg adult was further from the pivot (more right) and explain your reasoning. 3. Predict wh
Alika [10]

Answer:

2) τ = F x  torque increases, 3) troque decreases,

4)  man approaches the pivot and the child must move away

5)  Σ τ = 0

Explanation:

2) when the man moves away from the pivot his torque increases significantly, since his distance increases

                 τ = F x

                 τ = m g x

therefore the system rotates faster

3) when the child approaches the pivot, his troque decreases, because the distance decreases

                 τ = f x

therefore the system must spin slower

4) If we place the man and the child on the side of a scale, the movement must be the man approaches the pivot and the child must move away, so that the torque is the same and the system can reach a balance

5) the rotational equilibrium expression

                 Σ τ = 0

is the one that describes the equilibrium of a system with several forces

8 0
3 years ago
A stone is dropped from the edge of a roof. find the distance travelled by the stone in 2sec after its release.
Lena [83]
S = ?
U = 0
V = ?
A = 9.81
T = 2

we tryna find s

lets use s = ut + (at^2)/2
ut cancels out since u = 0
(at^2)/2 = (9.81 x 2^2)/2
= 19.62m
3 0
3 years ago
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