Why is no work done by gravity on a satellite?

Why is no work done by gravity on a satellite?

When a satellite moves around the Earth, then the force of gravity on the satellite is perpendicular to its displacement. Hence, the work done on the satellite by the Earth is zero.

Why does the force of gravity do no work on a bowling ball rolling along a bowling alley?

If the floor is sloped, the work done by gravity would be non-zero. But most bowling alleys are pretty flat. Basically, as the ball is rollign down the alley, gravity is not playing any part in the ball’s energy state (relative to the ground). Therefore gravity does no work.

How does the force of gravity keep a satellite in orbit?

The force due to gravity keeps a satellite in orbit by pulling it toward Earth. By moving fast enough however, the satellite falls in a curved path and circles the Earth. So, orbit is something like a controlled fall. Is there gravitational force between two students sitting in a classroom?

Why does the force of gravity change the speed of a satellite in an elliptical orbit?

Why does the force of gravity change the speed of a satellite in an elliptical orbit? Gravity slows the satellite as it moves away and speeds it up on its return.

When a satellite is in orbit around the Earth the force of gravity on the satellite?

True weightlessness only occurs in deep space where the gravitational force on an object is zero. A satellite in a stable circular orbit around Earth is continually in free fall. As it orbits, it experiences a gravitational force towards the centre of Earth, which causes it to change direction and ‘fall’ towards Earth.

What is the work done by the force of gravity on a satellite moving around the Earth in a circular orbit of radius 3500 km?

zero
Therefore, the work done is zero. So the satellite moving around the earth in a circular orbit, the work done is zero.

Why don t satellites in orbit fall to the ground Why don’t they fly off into space?

Satellites don’t fall from the sky because they are orbiting Earth. Even when satellites are thousands of miles away, Earth’s gravity still tugs on them. Gravity–combined with the satellite’s momentum from its launch into space–cause the satellite go into orbit above Earth, instead of falling back down to the ground.

Does gravity do work on a satellite orbiting the Earth?

The force of gravity does no work on a satellite in circular orbit since the force is always perpendicular to the planet’s direction of motion. As the satellite moves toward the Sun, the gravitational force does positive work, and the satellite speeds up (GPE converting to KE).

How can the force of gravity change the speed of a satellite when it is in an elliptical orbit but not when it is in a circular orbit?

The speed of the satellite doesn’t change because there is no component of gravitational force in the direction of its motion. When a satellite is in an elliptical orbit, the gravitational force will have a component along the direction of motion at all points of the orbit, except for the perigee and apogee.

How will planets move if there is no gravity in the universe?

Even Earth itself would break apart into chunks and drift away into space. If there was no gravity anywhere in the Universe, the same thing would happen to the Sun, and to all the stars, the planets and black holes. The entire Universe would turn into a floating soup of atoms and molecules.

Does gravitational force do work on a satellite?

The force of gravity does no work on a satellite in circular orbit since the force is always perpendicular to the planet’s direction of motion. Note that as the satellite is moving away from the Sun, the gravitational force is doing negative work on the satellite, so GPE is being stored (KE converting to GPE).

What is the work done by the force of gravity in the following cases?( A satellite moving around the earth in a circular orbit of radius 35000 km?