A Cat Lifting a Barbell: How Much Work is Done?

Calculating Work Done

Work is defined as the product of force and distance. In this scenario, the cat is lifting a barbell weighing 2.5 kg a distance of 3 meters.

Force = Weight of the barbell = Mass x Gravity = 2.5 kg x 9.8 m/s² = 24.5 newtons

Therefore, the work done can be calculated as follows:

Work = Force x Distance = (24.5 N) x (3 m) = 74 joules

So, it takes 74 joules of energy to lift the 2.5-kg barbell 3 meters off the floor. This is the work done to overcome gravity and move the barbell upwards.