A _____ is a system of ropes and wheels that give Mechanical Advantage.
screw
wedge
inclined plane
wheel and axle
pulley
pulley
although a simple pulley provides no advantage. You need some movable block-and-tackle setup.
Yes, you are correct. A single pulley only changes the direction of force, it does not provide any mechanical advantage. To gain mechanical advantage, a movable block-and-tackle setup is needed, which includes multiple pulleys and ropes. This system can provide a mechanical advantage by reducing the amount of force needed to lift an object. Thank you for the clarification.
The correct answer is pulley. A pulley is a simple machine that consists of a wheel with a groove around its circumference. It is part of a system of ropes and wheels that work together to provide mechanical advantage.
To understand how a pulley gives mechanical advantage, let's break it down further:
A pulley system typically consists of a rope or a chain that is looped around one or more pulleys. The force that is applied to one end of the rope is used to lift or move a load attached to the other end.
The mechanical advantage of a pulley is determined by the number of ropes or cables supporting the load. The more ropes or cables, the greater the mechanical advantage. This is because each additional rope or cable shares the weight of the load, effectively reducing the force required to lift it.
For example, imagine you have a single fixed pulley. This type of pulley is attached to a stationary object, like a ceiling. When you pull on one end of the rope, the other end lifts the load. However, using a single fixed pulley doesn't provide any mechanical advantage, as the force needed to lift the load is the same as the weight of the load itself.
On the other hand, if you use a movable pulley, things change. A movable pulley is attached to the load itself, and the rope is looped through the pulley. When you pull on one end of the rope, the pulley moves with the load, reducing the required force. In this case, the mechanical advantage is 2, meaning you only need to apply half the force to lift the load compared to its weight.
Another type of pulley system is the block and tackle, which combines multiple fixed and movable pulleys. This arrangement increases the mechanical advantage even further. By adding additional pulleys, the weight of the load is distributed among more ropes or cables, making it even easier to lift heavy objects.
So, in conclusion, a pulley is a system of ropes and wheels that provides mechanical advantage by distributing the load's weight among multiple ropes or cables.