a.raising a flagpole
pulley for what?
To change the direction of movement in a pulley system, you can use a reversing pulley or guide the rope or belt around the pulleys in the desired direction. Another option is to use a double-pulley system where one side moves in the opposite direction to the other.
More force is exerted with one pulley.
me
A simple single pulley enables the applied force to change direction. A pulley at the top of a well is the common example. In many applications, such as the fan belt on a car, it is used to transfer energy from one shaft to another.
To remove a pulley, you typically need to use a pulley puller tool. First, release tension on the belt connected to the pulley. Then, follow the specific instructions for your vehicle or equipment to use the pulley puller to gently remove the pulley without damaging surrounding components.
Fixed Pulley and Compound Pulley.
No, a pulley does not use friction. Pulleys are simple machines that use a wheel and axle to redirect the force applied to them. Friction is not necessary for a pulley to work properly.
It would depend on what you want to use the belt and pulley for
Are you talking about the "idler pulley"? They are quite simple to change. Loosen the serpentine belt by using a socket on the center of the tensioner pulley, slide the belt off the idler pulley, use a socket to pull the center bolt of the idler pulley and replace the pulley with a new one.
To accurately calculate the tension in a string passing over a pulley, you can use the formula T1 T2 2ma, where T1 is the tension on one side of the pulley, T2 is the tension on the other side of the pulley, m is the mass of the object being lifted, and a is the acceleration of the object.
A common example of a pulley is a flagpole pulley system, where a rope is used to raise and lower a flag. The pulley helps to reduce the amount of force required to lift the flag by distributing the load.