Question

An elevator lifts a person of mass 125 kg a distance of 500 m. What work is done by the elevator?
pls help!!

Answer 1

$\underline\mathfrak \green{ Question }$

An elevator lifts a person of mass 125 kg a distance of 500 m. What work is done by the elevator?

$\underline\mathfrak \blue{ Answer }$

to find = Work done

$\rm work = f×s$

• Force = ? (to find)

• s(distance)=500m(given)

To find force :

$\rm F = m×a$

• mass(m) = 125kg

• acceleration(a)=9.8m/s²(acceleration due to gravity)

Now, by applying the formula :

$\rm{ F=m×a}$

$\rm 125×9.8$

$\rm{1225N}$

Now,

• Gravity=9.8m/s²(we know that)gravitational force on earth is constant.

• mass(m) = 125kg

• height (h) = 500m

Now, (We know that)

to find Work done we use the formula:-

$\rm{ W = f×s }$

here,

• Force (f) = 1225N

• Distance (s) = 500m

By applying the formula

$\rm{ W=f×s }$

$\rm{ W=1225×500}$

$\rm{ W=612500 }$

therefore, the work done here, in this case is of 612500 joules. or 612500J.

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Hope, this will help you!!