Question

You apply a force of 18 N on to the end of a lever to open a paint can lid. The resistance of the lid is 9 N. Calculate the MA.

Answer 1

MA = 0.5

Step-by-step explanation:

MA = (Useful Force) / (Input Force)

MA = (18 - 9) N / 18 N = 9 / 18

Hence, MA = 0.5

Answer: MA = 0.5

Answer 2

MA = 0.5

Step-by-step explanation:

The mechanical advantage is defined as:

MA = Resistance_force / Effort_force

Resistance_force = 9 N

Effort_force = 18 N

We substitute,

MA = 9N / 18 N

MA = 0.5