A person pulls the rope in Pulley C by 3 meters and lifts the load by 1 meter. Using the equation for work, how much work is done by the person on the pulley and by the pulley on the load? A The plason does 600J of work on the pulley, and the pulley does 200J of work on the load B The person does 200J of work on the pulley, and the pulley does 200J of work on the load C The person does 200J of work on the pulley, and the pulley does 600J of work on the load D The person does 600J of work on the pulley, and the pulley does 600J of work on the load Part B: Based on Part A which statement BEST describes how a pulley affects the total amount of work done by the machine? A A pulley decreases the amount of work done by the person and by the machine. B A pulley does not affect the total work that must be done by the person or the machine C A pulley decreases the amount of work done by the person and increases the amount of work done by the machine

## Step 1<br />The problem involves the concept of work done by a force. The formula for work done is given by:<br />### **Work = Force x Distance**<br />In this case, the force is the weight of the load, which is 200N, and the distance is the distance the load is lifted, which is 1 meter.<br /><br />## Step 2<br />Substitute the given values into the formula to calculate the work done by the pulley on the load.<br />### **Work = 200N x 1m = 200 Joules**<br /><br />## Step 3<br />The work done by the person on the pulley is the same as the work done by the pulley on the load is 200 Joules.<br /><br />## Step 4<br />The second part of the problem asks about the effect of a pulley on the total amount of work done by the machine. The work done by a machine is the product of the force applied and the distance over which the force is applied. In this case, the force is the weight of the load and the distance is the distance the load is lifted.<br /><br />## Step 5<br />Since the pulley does not change the force or the distance, it does not affect the total work done by the machine. Therefore, the statement that best describes how a pulley affects the total amount of work done by the machine is that a pulley does not affect the total work that must be done by the person or the machine.