Question

how much work (in j) must be done to lift a stack of bricks, which has a mass of 200 kg, from the ground to a height of 3 m? (g

Answer 1

To lift a 200 kg stack of bricks to a height of 3 meters, the work done is calculated using the formula for work against gravity. The work done is 5886 Joules.

Step-by-step explanation:

Calculating Work Done to Lift Bricks

To calculate the work done in lifting the 200 kg stack of bricks to a height of 3 meters, we use the formula for work done against gravity, which is work (W) = force (F) × distance (h). The force is equivalent to the weight of the object, which can be calculated using the formula weight (W) = mass (m) × gravitational acceleration (g). Assuming standard gravity, g is approximately 9.81 m/s².

First, calculate the weight of the bricks:

Weight = Mass × Gravitational acceleration = 200 kg × 9.81 m/s² = 1962 N

Then, calculate the work done:

Work = Force × Distance = 1962 N × 3 m = 5886 J

So, the amount of work required to lift the bricks is 5886 Joules.