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What else can I help you with?
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
What are ways that simple machines change a force?
Simple machines change a force by either multiplying the input force or changing the direction of the force applied. For instance, a lever allows a small input force to lift a heavier load by increasing the distance over which the force is applied. Pulleys can redirect a force, making it easier to lift objects vertically. Additionally, inclined planes reduce the effort needed to lift an object by spreading the work over a longer distance.
Which simple machine would lift a rock?
A simple machine that would lift a rock is a lever. By using a lever, you can apply force to one end, which allows the rock to be lifted on the other end. The lever amplifies your input force, making it easier to move heavy objects. Another option is a pulley, which can also effectively lift a rock by distributing the weight and reducing the effort needed.
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 simple machine would you use to lift a piano to the top of a building?
To lift a piano to the top of a building, a pulley system would be the most effective simple machine. Pulleys can reduce the amount of force needed to lift heavy objects by distributing the weight and allowing for easier lifting with less effort. By using multiple pulleys in a block and tackle configuration, you can significantly decrease the force required to raise the piano safely to the desired height.
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.
What science concepts are involved in helicopter flight?
Helicopter flight involves principles of aerodynamics, including lift and drag. The main science concepts at play are Bernoulli's principle and Newton's third law of motion. Bernoulli's principle explains how differences in air pressure above and below the rotor blades create lift, while Newton's third law states that for every action (downward force of the blades), there is an equal and opposite reaction (upward force of the helicopter).
How does a helicopter get its lifting force?
A helicopter gets its lifting force from the rotation of its main rotor blades. As the rotor blades spin, they create a pressure difference between the top and bottom surfaces, generating lift that enables the helicopter to become airborne. The angle of the rotor blades can be adjusted to control the amount of lift produced.
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.
Why force is needed to lift a bag?
Force is needed to lift a bag because the bag has mass, which causes it to experience the force of gravity pulling it down. By applying an upward force greater than the force of gravity, the bag can be lifted against gravity.
A movable pulley reduces the amount of effort needed to lift a lode by making what change?
A movable pulley reduces the effort needed to lift a load by changing the direction of the force required to lift the load. By pulling down on one end of the pulley system, the load is lifted up with less force needed due to the mechanical advantage gained from the pulley's design.
When a helicopter is a stationary the blades on both sides of the rotor give the same lift?
Yes, when a helicopter is stationary, the blades on both sides of the rotor produce equal lift. This is necessary to balance the helicopter and keep it hovering in place. The main rotor provides lift by spinning rapidly and creating an upward force that counteracts gravity.
How does a helicopter stay in the air?
The source of lift force from the rotor (Rotation of two objects 'blade' creates a lifting force) blades allows the helicopter to stay in one area for extended periods of time. Each rotor blade, whether it is 2 or 7, has the ability to change pitch. This means the blade can rotate so that the nose or leading edge can tilt down or up. If it pitches up, the lift of the blade increases. Collective Controls As the blades rotate it produces lift. The pilot inputs controls that increases the pitch on all the blades at once. All the blades pitch up and produce more lift, so the helicopter rises. Cyclic Controls The pitch of the blades can also be controlled so that the blade pitches UP when it is on one side of the helicopter and pitches DOWN when it is on the other side. As the advancing blade is moving from rear to front, it decreases it Lift. Then as the blade moves to other side, it increases its Lift and pushes the helo through the air. In a simply explanation, this is what causes the helicopter to fly forward. Think of it like someone paddling a canoe. On many helicopters, the input is accomplished through the controls of the Swashplate. Custermen - Worked 11 years at Bell Helicopter.
How can you decrease the amount of force needed to lift a load with a lever?
You can decrease the force needed to lift a load with a lever by increasing the length of the lever arm. By moving the pivot point or fulcrum closer to the load, you can reduce the amount of force required to lift the load.
Why does a moveable pulley reduce the effort force?
A moveable pulley reduces the effort force needed because it changes the direction of the force applied. By pulling down on one end of the rope attached to the pulley, you can raise the load with only half the force needed to lift it directly.
Does the position of the fulcrum affect the force necessary to lift a weight?
Yes, the position of the fulcrum affects the force required to lift a weight. Placing the fulcrum closer to the load reduces the effort needed to lift the weight. Conversely, placing the fulcrum further from the load increases the force needed to lift the weight.
Why is a helicopter swooping downward not in free fall?
A helicopter swooping downward is not in free fall because it maintains lift from its rotor blades. The rotor blades create lift by pushing air downward, essentially countering the force of gravity. This allows the helicopter to descend at a controlled rate without free falling.
