A hanging pulley system is designed so that 100 N load is supported by 4 supporting strands run through 4 different pulleys. How much effort is required to lift the load? A 75 N B 50 N C 25 N D (D) 100 N

## Step 1<br />In a hanging pulley system, the load is supported by multiple strands running through different pulleys. This setup effectively increases the mechanical advantage of the system, allowing a smaller effort to lift a larger load.<br /><br />## Step 2<br />In this specific problem, the load is 100 N and it is supported by 4 strands. This means that the effort required to lift the load is divided among these 4 strands.<br /><br />## Step 3<br />To find the effort required, we divide the load by the number of strands. This is because the effort is distributed among the strands, so each strand carries a fraction of the load.<br /><br />### **Effort = \(\frac{Load}{Number\,of\,strands}\)**<br /><br />## Step 4<br />Substitute the given values into the formula:<br /><br />### **Effort = \(\frac{100\,N}{4}\)**