Question

a worker uses a pulley system to raise a 225 n carton 16.5 m. a force of 129 n is exerted and the rope is pulled 33.0 m. what is the ima of the system?
a 2
b 5
c 9
d 7

Explanation:

Step1: Recall IMA formula

IMA (Ideal Mechanical Advantage) for pulley: $IMA = \frac{d_{effort}}{d_{resistance}}$

Step2: Identify distances

$d_{effort} = 33.0\ m$, $d_{resistance} = 16.5\ m$

Step3: Calculate IMA

$IMA = \frac{33.0}{16.5} = 2$

Answer:

a. 2