Question

. How much work is done in lifting an object that has a mass of 5kg a vertical distance of 2m?

Answer 1

Answer:

100 Joules

Explanation:

The question is testing on how to calculate work done;

We are given;

• Mass of an object is 5 kg
• Distance moved is 2 m

We are required to calculate the amount of work done.

How do we calculate work done?

• Work done is the product of force and distance.
• Therefore without distance covered no work is done.
• Work done = Force × distance
• Additionally, it is measured in joules or Nm

In this case;

Force = mass × 10 N/kg

         = 5 kg × 10 N/kg

         = 50 N

Therefore;

work done = 50 N × 2 m

                  = 100 Joules

Thus, the work done in lifting the object is 100 Joules