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How many parts to a block and tackle before you lose mechanical advantage?
Wiki User
∙ 14y ago
The answer depends on the quality of the components used.
It also depends on whether you use a simple system with just 2 blocks, or use a cascaded system where the output of one block and tackle feeds the input to another.
The only other answer I can give is "it's fewer than you think".
Wiki User
∙ 14y ago
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What does it mean to have an ideal mechanical advantage of 7?
The ideal mechanical advantage is calculated as: Ideal_Mechanical_Advantage = distance_moved_by_effort / distance_moved_by_load. It is ideal because it ignores real world factors like energy lost through friction. So an Ideal Mechanical Advantage (IMA) of 7 means that the machinery amplifies the applied effort by 7. For example, a 7 kg load can be balanced using a block-and-tackle arrangement (which has 7 ropes supporting the load block and thus an IMA of 7) using only 1 kg and lifted by applying slightly more than 1 kg. In the real world, there is friction between the pulleys and their bearings so that more real effort is required before the load moves and the real Mechanical Advantage of the above block-and-tackle arrangement is less than 7.
What does double pulley system mean in science?
A "double pulley" may refer to a two-block (two rope) pulley, or to the arrangement of two separate pulley blocks as a "block and tackle" -- designed to make lifting easier by reducing the necessary lifting force: a smaller force is applied over a greater distance to achieve a mechanical advantage.
How do you find the mechanical advantage of a simple machine?
To find the mechanical advantage of a simple machine divide output force by input force. (input force is the force that we exert on a machine, and output force is the force that is exerted by a machine).
Is a block and tackle a wheel and axle?
No, a block and tackle is not considered a wheel and axle system. It is considered a type of pulley system.
A system of pulleys is called?
A system of pulleys is called a block and tackle
Mechanical advantage of the block and tackle?
Equal to the number of cords supporting the weight.
What is a block and tackle used for?
Block and tackle refers to a rope threaded through a series of pulleys to provide mechanical advantage, and it is used to lift heavy objects,
What is the advantage of a pulley?
Of a single pulley wheel, only that it changes the direction of the force ie: from overhead. > On a block and tackle system, 2 or more pulley wheels are used in a certain way to produce mechanical advantage. The simplest type of block and tackle offers a mechanical advantage of 2
Is the mechanical advantage of a block and tackle equal to the number of ropes used to raise the object?
look in your ducking textbook
If a block and tackle is a simple machine What mechanical advantage does it give the user and what does the user have to give up in exchange?
The mechanical advantage is that the force applied increases but that is compensated by the fact that the rope or chain needs to be moved through a greater distance.
How is a block and tackle is used today?
The block and tackle is still used in the manner it has always been used, to gain a mechanical advantage in lifting or pulling objects. It is used extensively aboard ships today. I used them in the Navy. I have also used the block and tackle on construction jobs when rigging heavy loads to move them. The block and tackle is very handy when there is no source of electric power available and in remote locations.
How does a block and tackle work?
By mechanical advantage. The multiple lengths of rope divide the force needed to lift an object everytime the rope reverses direction thru a pully.
Which is better a incline plane or pulley?
A single pulley simply changes the direction of the force. A block and tackle or multiple pulleys can offer a mechanical advantage - same as an inclined plane. For the same mechanical advantage, a pulley system may be better because of lower friction.
What does it mean to have an ideal mechanical advantage of 7?
The ideal mechanical advantage is calculated as: Ideal_Mechanical_Advantage = distance_moved_by_effort / distance_moved_by_load. It is ideal because it ignores real world factors like energy lost through friction. So an Ideal Mechanical Advantage (IMA) of 7 means that the machinery amplifies the applied effort by 7. For example, a 7 kg load can be balanced using a block-and-tackle arrangement (which has 7 ropes supporting the load block and thus an IMA of 7) using only 1 kg and lifted by applying slightly more than 1 kg. In the real world, there is friction between the pulleys and their bearings so that more real effort is required before the load moves and the real Mechanical Advantage of the above block-and-tackle arrangement is less than 7.
What pulley is attached to the load and moves as the load moves Hi I'm Gretchen?
Hi Gretchen, this arrangement to gain mechanical advantage is often referred to as a "block and tackle". It consists of pulleys and ropes, usually not more than four, where the pulley attached to the load moves with the load, and the mechanical advantage is determined by the number of ropes.
Which machine has the greatest mechanical efficiency a block and tackle or a lever?
In theory there is no difference in efficiency (it would be 1), but in practice I think a block and tackle would lose more force to friction in the pulleys and between the rope and pulleys.
What is the function of a block and tackle?
A block and tackle consists of a system of pulleys with a rope and hook. It is a simple machine which lets you lift a heavy weight more easily. We say it gives you a mechanical advantage,or that it is a force multiplier because it lets you trade a large distance by which you pull the rope using a small effort for a small distance lifting the heavy weight. An example is an engine hoist.
