Question

A 5.0 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf at a distance of 0.33 m above the counter? answer in:____J

Answer 1

Given:

The mass of the sugar is m = 5 kg

The distance of the shelf from the counter is h = 0.33 m

Required: Work done to put the bag on a shelf above the counter.

Explanation:

The work done can be calculated by the formula

$\begin{gathered} Work\text{ done = potential energy} \\ W=mgh \end{gathered}$

Here, g = 9.8 m/s^2 is the acceleration due to gravity.

On substituting the values, the work done will be

$\begin{gathered} W\text{ =5}\times9.8\times0.33 \\ =16.17\text{ J} \end{gathered}$

Final Answer: The work done to put the bag on a shelf above the counter is 16.17 J.