Preliminary Physics I - Gravitation

<p>6.67 x 10-11 m3 kg-1 s-2 (B)</p> Signup and view all the answers

<p>Centripetal force (B)</p> Signup and view all the answers

<p>Law of universal gravitation (C)</p> Signup and view all the answers

<p>Radius of the Earth (C)</p> Signup and view all the answers

<p>It decreases rapidly. (D)</p> Signup and view all the answers

<p>Their acceleration is independent of mass. (C)</p> Signup and view all the answers

<p>The amount of matter in the object. (B)</p> Signup and view all the answers

<p>The cork will float and the nail will sink. (D)</p> Signup and view all the answers

<p>Buoyant force. (D)</p> Signup and view all the answers

<p>It is equal to the weight of the fluid displaced. (D)</p> Signup and view all the answers

<p>An object with a density of 0.5 g/cm³. (B)</p> Signup and view all the answers

<p>Designing ships and submarines. (B)</p> Signup and view all the answers

<p>Objects with densities lower than the liquid will float. (D)</p> Signup and view all the answers

<p>$g = \frac{W}{m}$ (A)</p> Signup and view all the answers

<p>Centripetal force provided by Earth (A)</p> Signup and view all the answers

<p>The product of their masses (D)</p> Signup and view all the answers

<p>It will move in a straight line tangent to the circular path (D)</p> Signup and view all the answers

<p>The apple has negligible mass compared to Earth (C)</p> Signup and view all the answers

<p>It experiences a force directed towards the center. (C)</p> Signup and view all the answers

<p>They are equal and opposite (D)</p> Signup and view all the answers

<p>The force per unit mass at a point in the field. (D)</p> Signup and view all the answers

<p>Closer field lines indicate a stronger field. (C)</p> Signup and view all the answers

<p>Linear motion along a tangent (C)</p> Signup and view all the answers

<p>$9.81 , m/s^2$ (A)</p> Signup and view all the answers

<p>Acceleration is inversely proportional to mass (B)</p> Signup and view all the answers

<p>$7.27 \times 10^{-5}$ rad/s (B)</p> Signup and view all the answers

<p>The strength decreases with distance from the mass. (C)</p> Signup and view all the answers

<p>Interplanetary exploration (C)</p> Signup and view all the answers

<p>$6.674 \times 10^{-11} \text{ N m}^2\text{ kg}^{-2}$ (A)</p> Signup and view all the answers

<p>The satellite remains stationary relative to the surface of the Earth. (A)</p> Signup and view all the answers

<p>$F_{centripetal} = F_{gravitational}$ (D)</p> Signup and view all the answers

<p>Weight is the force experienced by a mass in a gravitational field. (B)</p> Signup and view all the answers

<p>-1.98 x 10^20 N (A)</p> Signup and view all the answers

<p>Field lines that are evenly spaced. (D)</p> Signup and view all the answers

<p>$F = G \frac{m_1 m_2}{r}$ (C)</p> Signup and view all the answers

<p>$r^3 = \frac{GM}{\omega^2}$ (B)</p> Signup and view all the answers

<p>Acceleration due to gravity (D)</p> Signup and view all the answers

<p>It remains fixed above one point on the Earth. (D)</p> Signup and view all the answers

<p>Air resistance affects the paper more than the stone. (A)</p> Signup and view all the answers

<p>Gravitational force (D)</p> Signup and view all the answers

<p>The product of their masses and inversely on the square of the distance (C)</p> Signup and view all the answers

<p>$g = G \frac{M}{R^2}$ (A)</p> Signup and view all the answers

<p>m/s^2 (B)</p> Signup and view all the answers

<p>An object only influenced by gravitational force (B)</p> Signup and view all the answers

<p>Multiply the masses and divide by the square of the distance. (D)</p> Signup and view all the answers

The time it takes for a satellite to complete one orbit around Earth, which is 24 hours.

The rate at which a geostationary satellite rotates around Earth, equal to the Earth's rotation rate (2π/24 hrs).

The distance from Earth's center to a geostationary satellite; calculated by setting the centripetal force equal to the gravitational force.

Every object attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

The force that keeps an object moving in a circular path.

The force of attraction between two objects with mass.

The universal gravitational constant, a fundamental physical constant linking the gravitational force to the masses and distance between them.

Applications of stationary satellites include weather monitoring, television transmission, and phone communication.

The force of attraction between any two objects with mass.

Falling under the sole influence of gravity. No air resistance.

The rate at which an object's velocity changes due to gravity.

A constant in the law of universal gravitation that determines the strength of gravity.

The calculation of the force between the Earth and the Moon.

The force that opposes the motion of an object through the air.

𝐹 = − 𝐺𝑀𝑚/𝑟^2

Demonstrating that objects fall at the same rate in a vacuum, ignoring air resistance.

A region around a massive object where a force acts on objects with mass.

Force per unit mass at a point in a gravitational field.

The force of attraction between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Lines used to visualize a gravitational field. Closer lines mean a stronger field.

The equation is defined as F/m, where F is the force and m is the mass. Units are N/kg

Radial and approximately uniform at the Earth's surface.

An orbit where a satellite stays above the same point on Earth.

Gravitational force on a mass near the surface of a planet.

The force per unit mass experienced by an object due to gravity.

The force of attraction between any two objects with mass.

The force that keeps an object moving in a circular path.

The force between two objects is proportional to the product of their masses and inversely proportional to the square of the distance between them.

Earth pulls on an apple, but the apple also pulls on the Earth.

The force that keeps planets in orbit, such as the moon around Earth.

Explanation of the force of attraction between objects.

Force required for an object's motion in a curve.

The force of attraction between two masses (m1 and m2) is calculated as F = -G * m1 * m2 / r^2, where G is the gravitational constant and r is the distance between the centers of the masses.

A fundamental constant in physics that determines the strength of the gravitational force between two objects.

The gravitational force experienced by a unit mass at a point in space.

The gravitational field strength at the Earth's surface, approximately 9.81 N/kg.

Gravitational fields that emanate outward from a central point of mass.

The motion of planets around a star (e.g., the Earth around the Sun) due to gravitational forces.

The centripetal force needed for circular motion is provided by the gravitational force in planetary orbits.

A force of attraction that exists between any two objects with mass.

The force that opposes the movement of an object through the air.

Falling only under the influence of gravity (no air resistance).

The upward force exerted by a fluid (like water) on an object.

Another name for the buoyant force.

How much mass is in a given volume of an object.

An object floats if its density is less than the density of the fluid it's in.

An object sinks if its density is greater than the density of the fluid it's in.

Independent of mass; all objects fall at the same rate in a vacuum.