A work of 4900 J is done on a load of mass 50 kg to lift it to a certain height. Calculate the height through which the load is lifted?

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Solution

Step 1: Given data:
Mass $m = 50 k g$
Work done $= 4900 J$
Step 2: Calculate the height,
When an object is raised to a height, the work done is equal to the potential energy stored in the body
Work done $=$ Potential Energy $= m g h$
Substituting the values in the formula
$W = m g h$
$4900 = 50 \times 9.8 \times h$
$h = \frac{4900}{50 \times 9.8}$
$h = 10 m$
Therefore, the object is raised to a height of $10 m$ .

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