Gravitational attraction provides the centripetal force needed to keep a planet in orbit around the Sun, and a satellite in orbit around a planet. An object moving in a circular orbit at a constant speed has a changing velocity. This is because velocity is a vector quantity that depends on speed and direction.

Explanation: Gravity is the only force on a satellite. Correct on edge.

That is to say, a satellite is an object upon which the only force is gravity. Once launched into orbit, the only force governing the motion of a satellite is the force of gravity. Newton was the first to theorize that a projectile launched with sufficient speed would actually orbit the earth.

The greater an object’s mass, the more gravitational force it exerts. So, to begin answering your question, Earth has a greater gravitational pull than the moon simply because the Earth is more massive.

There are two forces that keep the planets in their orbits.

• Gravity. Gravity is the primary force that controls the orbit of the planets around the sun.
• Inertia.
• Gravity Working with Inertia.
• Velocity and Gravity.

Jupiter, the fifth planet from the Sun, has the strongest gravitational pull because it’s the biggest and most massive.

• Massive Gravitation.
• Jupiter and the Asteroid Belt.
• Almost a Star.
• Jupiter and Neighboring Planets.

Jupiter

Artificial gravity can be created using a centripetal force. A centripetal force directed towards the center of the turn is required for any object to move in a circular path. In the context of a rotating space station it is the normal force provided by the spacecraft’s hull that acts as centripetal force.

The strong nuclear force, also called the strong nuclear interaction, is the strongest of the four fundamental forces of nature. times stronger than the force of gravity, according to the HyperPhysics website. And that’s because it binds the fundamental particles of matter together to form larger particles.

In the 20th century, Newton’s model was replaced by general relativity where gravity is not a force but the result of the geometry of spacetime. Under general relativity, anti-gravity is impossible except under contrived circumstances.

Q: can people defy the law of gravity by means of levitation , balance or magnetice devices. Near Earth, we cannot ever escape the pull of gravity. However, small objects can be levitated by using an effect called diamagnetism.

Mass does not affect the speed of falling objects, assuming there is only gravity acting on it. Both bullets will strike the ground at the same time. The horizontal force applied does not affect the downward motion of the bullets — only gravity and friction (air resistance), which is the same for both bullets.

The object passes through water and as it does so the upthrust acts against the weight of the object (as you now know – this is caused by gravity). In some cases the upthrust is equal to the force of gravity and so the object floats. If the object sinks the upthrust slows the rate of descent.

The opposite of gravity is called normal force, which is denoted by “R” or “N”. According to Newton’s 3rd law every action has an equal & opposite reaction. So when you are standing on ground, earth’s core is pulling you towards itself, that’s gravity.

The normal force on an object at rest on a flat surface is equal to the gravitational force on that object.

The amount of change is extremely small, I calculate it as a change of only 3.6 microGal per year, this is only 0.of the Earth’s gravity. As an example of how small this change is, consider how other variables affect the Earth’s gravity.

Gravity is the force pulling you down. Buoyancy is the upward force that keeps things afloat in liquids. Water exerts a force on the contacting surface of the board. Buoyancy is the force pushing you up.

What are the three types of buoyancy? The three types of buoyancy are positive buoyancy, negative buoyancy, and neutral buoyancy. Positive buoyancy is when the immersed object is lighter than the fluid displaced and this is the reason why the object floats.

Students will observe that as long as the shape and material are the same, size does not affect whether an object will sink or float.

If the weight of an object is less than the weight of the displaced fluid when fully submerged, then the object has an average density that is less than the fluid and when fully submerged will experience a buoyancy force greater than its own weight.

Surprisingly the buoyant force doesn’t depend on the overall depth of the object submerged. In other words, as long as the can of beans is fully submerged, bringing it to a deeper and deeper depth will not change the buoyant force. It’s just that for sinking objects, their weight is greater than the buoyant force.

The buoyancy force is caused by the pressure exerted by the fluid in which an object is immersed. The buoyancy force always points upwards because the pressure of a fluid increases with depth.

The buoyant force depends on the mass of the object. The buoyant force depends on the weight of the object. The buoyant force is independent of the density of the liquid. The buoyant force depends on the volume of the liquid displaced.

If an object’s weight is greater than the buoyant force acting on it, then the object sinks. A given volume of a denser substance is heavier than the same volume of a less dense substance. Therefore, density of an object also affects whether it sinks or floats.

Summary

• The factors that affect buoyancy are… the density of the fluid. the volume of the fluid displaced. the local acceleration due to gravity.
• The buoyant force is not affected by… the mass of the immersed object. the density of the immersed object.

Answer. Explanation: since buoyant force is dependent on difference in densities. So on increasing temperature the density decrease of liquid decrease so its buoyant force also decrease and vice versa.