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If a person wants to raise the 100 N weight how much downward force must he exert on the rope?
If you have a single pulley, then you would need to exert 100N + an amount to overcome friction in your pulley.
If you have 2 pulleys, rope connected to a beam at top, descends through pulley on item lifted, and back up through pulley at the top and then down to where you are pulling. Then the force is split in half and you would exert 50N + an amount to overcome friction.
If you connect a rope to the item, up through a double pulley, down through a pulley on the item, and back up through the double pulley again and down to the person who is pulling. Then you divide the force into thirds, and the force is 33.3N + an amount to overcome friction.
Essentially count the upward pulling ropes and divide by that number. A rope simply looping over a pulley that you're hanging onto the other end of only counts as once, and would be no different from you pulling up directly on the object, or on a pulley connected to the object.
What else can I help you with?
What does a bulldozer exert on a plile of soil?
A bulldozer exerts a downward force on a pile of soil as it pushes and moves it. This force helps to compact or move the soil depending on the intention of the operation.
Why is 100 kilogrammes of feather and 100 kilogrammes of rocks has the same weight?
Even though feathers are light and rocks are heavy, when 100 kilograms of each are placed on a scale, they will exert the same downward force due to gravity. Weight is a measure of the force of gravity on an object, so in this case, both the feathers and rocks will weigh the same.
How much force do you push down on the earth with?
The force you exert on the Earth due to gravity is equal to your mass multiplied by acceleration due to gravity. On average, this force is approximately equal to your weight.
What force pushes upward on the continental crust What force pushes downward?
The force pushing upward on the continental crust is isostatic rebound, caused by the buoyancy of the less dense continental crust floating on the denser mantle. The downward force is from the weight of the overlying rock and sediments, as well as tectonic forces like subduction or compression.
What is the downward push of the atmosphere called?
The downward push of the atmosphere is called atmospheric pressure. It is the force exerted by the weight of air above us and is measured in units such as millibars or inches of mercury.
What type of force does a backpack exert on the body?
A backpack exerts a downward force on the body due to gravity pulling it downward. Additionally, the straps of the backpack exert a force on the shoulders and back to support the weight of the backpack.
What minimum downward force needed to lift the 120 Newtons weight?
No matter how much force you exert downward, it shall avail you naught. No downward force acting directly on the object can ever succeed in lifting it.
In what directions does a solid exert force?
downward
Do all action-reaction forces produce motion?
Some do and some don't. In the case of someone sitting on a chair, they exert a downward force on the chair due to their weight. The chair exerts an equal and opposite reaction force on them but, since this upward force acting on the person is equal to their weight, the net force is zero and the person does not accelerate. However, consider now if the person pushed themselves up off the chair with their hands. They are now exerting an additional force on the chair with their arms along with the force due to their weight. The chair will exert a reaction force on the person that is equal and opposite to the combined downward force due to the person's weight and their arms pushing. Since it is equal to the weight plus the pushing force of the arms, it will be greater than the downward force on the person due to their weight and a net upward force will be produced, accelerating the person upwards.
Which exerts more force on the ground a person lying down or standing up?
in which situation you exert more force downward, standing or lying horizantilly?
How can a bicycle seat exert a force?
A bicycle seat exerts a force on a rider by supporting the rider's weight through normal force. When a person sits on the seat, their weight pushes down on the seat, and the seat pushes back up with an equal force (normal force) to support the rider.
What is the force called that is used when you stand rest of a floor and the flood exert an upward force?
The force is called normal force. It is a reactionary force exerted by a surface to support the weight of an object resting on it. In the context of standing on a floor, the normal force from the floor acts in the upward direction to balance the downward force due to gravity acting on the person.
Billy is sitting in a chair in class. If the action force is the downward push of his weight on the chair what is the reaction force the downward force of Billy's weight on the Earth gravity the upwar?
The reaction force to the downward push of Billy's weight on the chair is the upward force of the chair pushing back on him. The downward force of Billy's weight on Earth is countered by the upward force of gravity acting on him.
Why do objects that weigh less exert more downwards force than objects that weigh more?
Objects that weigh less exert less downward force due to gravity compared to objects that weigh more. Gravity acts on all objects equally, causing them to fall at the same rate regardless of weight. However, weight is a measure of the force of gravity acting on an object's mass, so objects with more mass will have a greater weight and exert a greater force on a surface when supported.
When you are standing on the ground how much upward force is exerted on you by the earth?
When standing on the ground, the Earth exerts a force equal to your weight in the downward direction (gravitational force) and you exert an equal force in the upward direction on the Earth (reaction force) as per Newton's Third Law of Motion.
Which type of force does a backpack exert on the bodys back and hips?
The backpack exerts a downward force (due to gravity) on the body's back and hips. This force is distributed across the back and hips, depending on the weight of the backpack and how it is positioned on the body.
What action and reaction forces are present when you are sitting in a chair?
When you sit in a chair, the action force is the downward force you exert on the chair due to your weight. The reaction force is the upward force exerted by the chair on you, supporting your weight and keeping you from falling to the ground.
