Question

Q C During a solar eclipse, the Moon, the Earth, and the Sun all lie on the same line, with the Moon between the Earth and the Sun. (b) What force is exerted by the Earth on the Moon?

Answer 1

Force exerted by the Earth on the Moon is $1.99.10^{20} N$.

What is mass?

• Mass is a physical body's total amount of matter. It also serves as a gauge for the body's inertia or resistance to acceleration (change in velocity) in the presence of a net force. The strength of an object's gravitational pull to other bodies is also influenced by its mass.
• The kilogram is the SI unit of mass (kg). In science and technology, a body's weight in a given reference frame is the force that causes it to accelerate at a rate equal to the local acceleration of free fall in that frame.
• For instance, a kilogram mass weighs around 2.2 pounds at the surface of the planet. However, the same kilogram mass would weigh just about 0.8 pounds on Mars and about 5.5 pounds on Jupiter.
• An object's mass is a crucial indicator of how much stuff it contains. Weight is a measurement of an object's gravitational pull. It is influenced by the object's location in addition to its mass. As a result, weight is a measurement of force.

(b) What force is exerted by the Earth on the Moon?

Knowing that: $m_s=2 \cdot 0 \cdot 10^{30} \mathrm{~kg}$is the sun's mass

$m E=6 \cdot 0 \cdot 10^{24} \mathrm{~kg}$is the earth's mass

$m_N=7.3 \cdot 10^{22} \mathrm{~kg}$ is the moon's mass

$d_{S E}=1.5 .10^{11} \mathrm{~m}$ is the distance between the sun\& the earth. dEM. .$3.85 \cdot 10^5 \mathrm{~m}$ is the distance between the earth and the moon.

We can calculate:

$\begin{aligned}F_{E N 1} &=\frac{G \cdot m_{\varepsilon} \cdot m_{N 1}}{\left(d_{\varepsilon N}\right)^2} \\&=\frac{6.67 \cdot 10^{-11} \cdot 6 \cdot 0 \cdot 10^{24} \cdot 7.3 \cdot 10^{22}}{\left(3.85 \cdot 10^8\right)^2} \\&=\frac{6.67 \cdot 6.0 \cdot 7.3 \cdot 10^{24+22-11}}{3.85^2 \cdot 10^{16}} \\&=\frac{6.67 \cdot 43.8 \cdot 10^{35-16}}{14.8225}=\frac{292.146}{14.8225} \cdot 10^{14} \approx 1.97 .10^{20} \mathrm{~N}\end{aligned}$

Force exerted by the Earth on the Moon is $1.99.10^{20} N$.

To learn more about mass, refer to:

brainly.com/question/3187640

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