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What are the three kinds of pulleys and describe each briefly?
The three kinds of pulleys are fixed pulleys, movable pulleys, and compound pulleys. Fixed pulleys are anchored in place and change the direction of the force applied. Movable pulleys have a pulley that moves with the load, reducing the force needed to lift the object. Compound pulleys consist of multiple pulleys working together to provide mechanical advantage in lifting heavy loads.
What are the differences between a fixed pulley and a moving pulley and how do each of them change work?
The difference between a fixed pulley and a movable pulley is, the wheel of a fixed pulley does not move because the wheel is attached to a wall, ceiling, or other object. Unlike a fixed pulley, a movable pulley's wheel does move. The wheel on a movable pulley is not attached to a wall or other object. A fixed pulley changes work by changing the direction of a force. A movable pulley changes work by reducing the input force needed to lift heavy objects. A movable pulley changes the direction of the input force and reduced it. A movable pulley also increases the output force.
What is the mechanical advantage of each pulley system?
A single fixed pulley has a mechanical advantage of 1, as it only changes the direction of the force. A moveable pulley system has a mechanical advantage of 2, as it reduces the force required by half. A block and tackle system, which combines fixed and moveable pulleys, can have a mechanical advantage greater than 2, depending on the number of pulleys used.
How does a number of pulleys affect the weight of a load compared to using just one pulley?
Using multiple pulleys in a system can reduce the amount of force needed to lift a load. Each additional pulley reduces the amount of force required by half, making it easier to lift heavier loads with more pulleys.
How much force must be used to lift 300 lbs with 4 pulleys?
Using 4 pulleys will reduce the amount of force needed. With each additional pulley, the force required is divided by the number of supporting ropes, so with 4 pulleys, the force required would be 1/4 of the weight, or 75 lbs.
What are the three kinds of pulleys and describe each briefly?
The three kinds of pulleys are fixed pulleys, movable pulleys, and compound pulleys. Fixed pulleys are anchored in place and change the direction of the force applied. Movable pulleys have a pulley that moves with the load, reducing the force needed to lift the object. Compound pulleys consist of multiple pulleys working together to provide mechanical advantage in lifting heavy loads.
How is a fixed pulley different from a movable pulley?
A fixed pulley is different from a movable pulley because a movable pulley has one end of the rope attached to it fixed on an unmoving object. The pulley is free to move with the rope. You pull the other end of the rope. Also, a movable pulley multiplies the applied force (effort force) and therefore has more mechanical advantage. A fixed pulley is attached to something that doesn't move, while one end of the rope is holding the weight, while the other is for pulling.A fixed pulley confers no mechanical advantage, but will convert motion in one direction into another direction.A movable pulley system, if the pulleys change their distance from each other, will confer a mechanical advantage.
What are the differences between a fixed pulley and a moving pulley and how do each of them change work?
The difference between a fixed pulley and a movable pulley is, the wheel of a fixed pulley does not move because the wheel is attached to a wall, ceiling, or other object. Unlike a fixed pulley, a movable pulley's wheel does move. The wheel on a movable pulley is not attached to a wall or other object. A fixed pulley changes work by changing the direction of a force. A movable pulley changes work by reducing the input force needed to lift heavy objects. A movable pulley changes the direction of the input force and reduced it. A movable pulley also increases the output force.
What are the three classifications of articulation based on functions?
The three classifications of articulation based on functions are fixed or immovable, slightly movable, and freely movable. Fixed or immovable joints provide stability and support, slightly movable joints allow for limited movement, and freely movable joints permit a wide range of motion. Each type of joint serves a specific function in the body.
Identify the different types of joints according to mobility and give examples for each?
There are three main types of joints based on mobility: immovable (synarthrosis) joints, slightly movable (amphiarthrosis) joints, and freely movable (diarthrosis) joints. Examples of immovable joints include sutures in the skull, slightly movable joints include intervertebral discs, and freely movable joints include the knee and elbow joints.
What is the mechanical advantage of each pulley system?
A single fixed pulley has a mechanical advantage of 1, as it only changes the direction of the force. A moveable pulley system has a mechanical advantage of 2, as it reduces the force required by half. A block and tackle system, which combines fixed and moveable pulleys, can have a mechanical advantage greater than 2, depending on the number of pulleys used.
What mechanical advantage of movable pulley?
It depends on how many times the rope 'goes around' the pulleys. If there are 2 ropes 'pulling up' then the mechanical advantage is double. Think about it this way: the tension throughout the rope is constant, so if the object being lifted is 100 pounds, but there are 2 ropes going up from the movable pulley, then each rope has 50 pounds tension on it, but they are the same rope, so you are pulling with 50 pounds force on the rope to create the 50 pounds tension. Note that the pulley system reduces the amount of force necessary to lift, but the amount of work necessary is the same. Example: if you want to lift the 100 pound weight by 1 foot, you will use 100 foot-pounds of work. With the pulley system as described, you are exerting 50 pounds of force, and must pull the rope 2 feet to lift the weight 1 foot.
Examples of variable cost and fixed cost?
Direct labor and direct material is example of variable cost which increase with each increase of unit. Factory rent is example of fixed cost which remains fixed even in change in number of units produced.
Fixed punishment for each type of crime?
fixed punishment for each type of crime
What is a platen in Plastic manufacturing?
The platen is the part of a machine that one half of a mold attaches to. The mold is normally created in two halves. In plastic manufacturing injection molding, each mold half is bolted, clamped, attached to one platen. One platen is normally a fixed or non movable and the movable one slides on Tie Bars that go through the four corners of the platen.
What is the definition of a movable joint?
Two parts that are joined, but can move relative to each other.
What is a description of the function of muscles?
the muscles make each movable bone move in you body
