A pulley system has an input force of 2.5 N and an output force of 10 N. What is the mechanical advantage of this system?

Option B. 4

Explanation:

From the question given above, the following data were obtained:

Input force = 2.5 N

Output force = 10 N

Mechanical advantage (MA) =?

Mechanical advantage (MA) is simply defined as the ratio of the output force to the input force. Mathematically, it can be expressed as:

Mechanical advantage = Output : Input

MA = Output / Input

With the above formula, we can obtain the mechanical advantage of the pulley system as follow:

Input force = 2.5 N

Output force = 10 N

Mechanical advantage (MA) =?

MA = Output / Input

MA = 10/2.5

MA = 4

Thus, the mechanical advantage of the pulley system is 4.