Question

1. calculate the amount of work done by a weightlifter who applies 1,557.4 n of force to lift a 157.8 kg barbell off the floor 1.15 m.

1.354.26 n - m
181.47 n - m
0 n - m
1,791.01 n - m

Explanation:

Step1: Recall work - formula

The formula for work is $W = F\times d$, where $W$ is work, $F$ is force, and $d$ is distance.

Step2: Identify given values

$F = 1557.4\ N$ and $d=1.15\ m$.

Step3: Calculate work

$W=1557.4\times1.15$
$W = 1791.01\ N - m$

Answer:

$1791.01\ N - m$