gneill said:
You'd be better off laying out your work in text in a post, explaining the steps. That way helpers can quote the lines and point out issues. Otherwise you're expecting them to forensically untangle where you started and what you did from the scatter of notes on the image. You're really limiting the number of helpers who'll be willing to make the effort that way.Cdh0127 said:
A pulley is a simple machine that consists of a wheel with a groove in its rim and a rope or belt that runs along the groove. It is used to change the direction of a force and make it easier to lift or lower an object. When one end of the rope is pulled, the other end moves in the opposite direction, allowing the object to be lifted or lowered.
In a pulley system, the mass of an object and the acceleration it experiences are directly proportional to the force applied to the system. This means that the greater the mass of the object, the greater the force needed to accelerate it. Similarly, the greater the acceleration, the greater the force needed to achieve it.
Angular kinematics is the study of the motion of objects rotating around a fixed point or axis. In the case of masses over a pulley, the pulley acts as the axis and the object's motion is described in terms of its angular displacement, velocity, and acceleration.
An ideal pulley is one that is frictionless and massless, meaning that it does not add any resistance or weight to the system. In real pulleys, there is always some amount of friction and the pulley itself has a small mass, which can affect the motion of the object being lifted or lowered.
The mechanical advantage of a pulley system is equal to the number of ropes supporting the object. This means that the more pulleys there are in the system, the greater the mechanical advantage and the easier it is to lift the object. However, adding more pulleys also increases the distance the rope must be pulled, requiring more work to be done.