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The same force as the weight of the helicopter and its crew and cargo.
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∙ 15y ago
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A fixed single pulley that is used to lift a block does what?
The choices are:A. Doubles the force required to lift the blockB. Decreases the force required to lift the blockC. Makes the block easier to lift by changing the direction of the force needed to lift it.D. Decreases the force required and changes the direction of the force required
Will the force applied to lift a brick reduce if you use pulleys?
yes, pulley will help IF not the if YOU USE COMBINE TWO OR MORE PULLEYS. Yes, using a pulley or a system of pulleys will reduce the force needed to lift a brick (or anything). HOWEVER the distance that the rope (or whatever effects the pulley system) has to now travel further so that the energy required to lift the brick through an equal height is always the same.
What is the formula for hydraulic lift?
Force (load) = Pressure X Area
How does a lift work?
The pulley in the mechanical device work together to make the lift move up and down. Counter weights.
Levers are advantageous for doing work because they provide?
Mechanical Advantage. Using a lever of appropriate size you could lift a 500 pound load with just 50 pounds of force. The distance from the weight to the Fulcrum would have to be 1/10th the distance from the Fulcrum to you, pushing down with 50 lbs of Force.
What science concepts are involved in helicopter flight?
lift and the down force of air
What forces are acting on a helicopter when it is still?
When a helicopter is hovering (aka "still") it has the force of gravity pushing "down" toward the Earth and the force of "lift" of the spinning rotor blade(s) pushing against the surrounding air. When the gravitational force is equal to the force of lift the helicopter hovers on the vertical axis.
How does a helicopter get its lifting force?
The rotor blades relieve the air pressure from the helicopter forcing it to lift.
A fixed single pulley that is used to lift a block does what?
The choices are:A. Doubles the force required to lift the blockB. Decreases the force required to lift the blockC. Makes the block easier to lift by changing the direction of the force needed to lift it.D. Decreases the force required and changes the direction of the force required
Are rotors used to help lift a helicopter off the ground?
The rotors are used for lift and thrust on a helicopter.
Why does the input force have to be greater than the force needed to lift the bale?
Friction increases the effect of the input force
What is a fixed single pulley that is used to lift a block?
It makes the block easier to lift by changing the direction of the force needed to lift it.
What force does an airplane at takeoff use more thrust or lift?
Interesting question. Lift is what actually allows an aircraft to leave the ground, but lift in a normal type aircraft (not a helicopter) is generated by forward movement through the air and that is produced by thrust. So, while lift is what's necessary to overcome gravity (weight), it's thrust that is needed to generate lift...so both forces are in play at takeoff.
If a hovering helicopter actually travels near 1000 MPH with the Earth's rotation but it is not the laws of motion moving it what is the force moving the helicopter?
The forces acting on the helicopter are lift and gravity. Since the helicopter is at a constant height from Earth, you would assume they are also balanced. In fact the lift is only countering some of gravity's force, while its inertia carries it away from Earth on a tangential path. The unbalanced gravity acts to pull the helicopter back to Earth at the same rate it goes away so it appears the helicopter stays motionless, to a person standing on the ground near the helicopter.
Why does the input have to be greater than the force needed to lift the bale?
Friction increases the effect of the input force
Can the number of pulleys affect the amount of force to lift a heavy objects to a high place?
Increasing the number of pulleys divides the force required to lift up a heavy object; increasing the number of pulleys decreases the force needed by the person (or motor) pulling the first end of the pulley system. However, it is important to know that it does not affect the total work needed to lift up the object. As the force is decreased, the distance of rope needed increases to compensate for a conserved amount of work required for the load to be lifted.
How helicopter go up?
The rotors on a helicopter are slanted and shaped so that when the rotors spin air slips right under the rotor and get pushed down therefore creating lift.
