Question

example 1
a workman exerts a horizontal force of 30 n to push a 12 kg table 4.0 m across a level floor at constant speed. calculate the work done.

Explanation:

Step1: Recall work done formula

Work done $W$ is calculated as $W = F \cdot d$, where $F$ is the applied force, and $d$ is the displacement in the direction of the force.

Step2: Substitute given values

Given $F = 30\ \text{N}$, $d = 4.0\ \text{m}$. Substitute into the formula:
$W = 30\ \text{N} \times 4.0\ \text{m}$

Step3: Calculate the result

Perform the multiplication:
$W = 120\ \text{J}$

Answer:

$120\ \text{J}$