gravity, it is the force that pulls everything towards the centre of the earth.
input force
When using a crowbar to lift a large rock, you are working against the force of gravity. Gravity is pulling the rock downward towards the Earth, and you are exerting force in the opposite direction to lift it.
Gravity.
As the backpack gets higher, the distance over which you are lifting it increases, requiring more work to overcome gravity. The force needed to lift the backpack is directly proportional to the distance it is lifted and the weight of the backpack. This is due to the gravitational force acting on the backpack.
If you and the bottle are anywhere near the Earth's surface, AND there's no other force working against you, AND the bottle itself weighs zero and you only have to lift the water, then you need to lift it with any force greater than roughly 19.6 newtons.
Gravity is the force that pulls an aircraft towards the ground, acting against the force of lift generated by the wings in level flight. Gravity pulls the aircraft downward, while lift generated by the wings counteracts this force to keep the aircraft aloft.
The force needed to lift a weight of 200N would be 200N. This is because the force needed to lift an object against gravity is equal to the weight of the object itself.
When using a lever to lift a 45 N rock, the force required would be an input force. This is because you are applying the force to the lever to lift the rock against the force of gravity. The output force would be the force exerted by the lever on the rock.
Lift something against gravity and you're measuring its weight, which is the force acting on it due to gravity.
The acceleration due to gravity (9.8 meters/sec.^2) * mass of object.
The load in a lever system refers to the resistance or weight that the lever is meant to move or lift. It is the object or force that the lever is working against to perform its function.