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gravity, it is the force that pulls everything towards the centre of the earth.

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Q: What force are you working against when you lift a backpack?
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What forces are you working against when you lift a backpack?

gravity, it is the force that pulls everything towards the centre of the earth.


When you use a crowbar to lift a rock you are working against a force called?

input force


When you use a crowbar to lift a large rock you are working against the force called?

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.


When you use a crowbar to lift a large rock you working against the force called?

Gravity.


Why is the force needed to pull a backpack up increases as it gets higher and higher?

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.


How many newtons are needed to lift a 2 liter bottle of water?

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.


What force pulls an aircraft toward the ground acts against the force of lift in level flight?

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.


How much force is needed to lift a weight fo 200n?

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 a force in or a force out?

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?

Lift something against gravity and you're measuring its weight, which is the force acting on it due to gravity.


What is the amount of force required to lift an object against the force of gravity equal to?

The acceleration due to gravity (9.8 meters/sec.^2) * mass of object.


Whats the definition of load as it applies to levers?

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.