The force pushing up is called the normal force. It is exerted upwards by a surface to support an object placed on it and counteract the force of gravity pulling the object downwards.
When gravity is pulling you downward when you sit, this is a balanced force. The force of gravity pulling you downward is balanced by the normal force exerted by the chair pushing back up against you.
The force pulling the apple down (gravity) is equal in size to the force pushing it up (normal force) when the apple is at rest or moving at a constant velocity. This is because the apple is in equilibrium and the forces are balanced.
Thrust is a pushing force. It is the force that propels an object forward in the direction it is moving.
The equal and opposite force to the downward force of gravity pulling on a man standing on the beach is the normal force exerted by the ground pushing back up on the man. This normal force prevents the man from sinking into the ground due to the force of gravity.
The force pushing up is called the normal force. It is exerted upwards by a surface to support an object placed on it and counteract the force of gravity pulling the object downwards.
When gravity is pulling you downward when you sit, this is a balanced force. The force of gravity pulling you downward is balanced by the normal force exerted by the chair pushing back up against you.
The force pulling the apple down (gravity) is equal in size to the force pushing it up (normal force) when the apple is at rest or moving at a constant velocity. This is because the apple is in equilibrium and the forces are balanced.
Thrust is a pushing force. It is the force that propels an object forward in the direction it is moving.
The equal and opposite force to the downward force of gravity pulling on a man standing on the beach is the normal force exerted by the ground pushing back up on the man. This normal force prevents the man from sinking into the ground due to the force of gravity.
Basically for the same reason that we don't sink into the Earth, despite gravity pulling us down. There is another force pushing us up - and there is another force pushing the hang glider up. In the case of the hang glider, the push is provided by the air.
Gravity is pulling down, and Buoyancy is pushing up. When the force of gravity is greater than the buoyant force, objects sink. When the buoyant force is greater than the force of gravity, objects float.
The reaction force to gravity is the ground pushing back up against you with an equal force to support your weight. This is known as the normal force.
Gravity . . . pulling you down. The scale . . . pushing you up. If these two forces were not equal, then there would be a net force on the bottom of your feet, either upward or downward, and you would be accelerating.
Pushing.
The force you apply by pushing on a rock is due to your muscles exerting force directly on the rock, known as external force. This force is a contact force that can vary in strength and direction. Gravity, on the other hand, is a constant force pulling the rock downward towards the Earth, known as a non-contact force.
Yes, there can be negative gravity. If a gravity is a pulling force then in the other hands a negative gravity would be a pushing force, in other words, the negative gravity would push us to wherever and the positive gravity on Earth would pull us.