Answer:
2648.7 Joules
Step-by-step explanation:
The total work done to lift thirty 6 kg boxes onto a shelf 1.5m high can be calculated as follows.
First, we need to find the force required to lift the boxes against gravity. Each box weighs 6 kg, so the total weight of the boxes is:
30 boxes x 6 kg/box = 180 kg
The force required to lift this weight against gravity is equal to the weight multiplied by the acceleration due to gravity, which is approximately 9.81 m/s²:
force = weight x acceleration due to gravity
force = 180 kg x 9.81 m/s²
force = 1765.8 N
Next, we need to find the distance the boxes are lifted. The shelf is 1.5 meters high, so the distance the boxes are lifted is also 1.5 meters.
Now we can calculate the total work done:
work = force x distance
work = 1765.8 N x 1.5 m
work = 2648.7 Joules
Therefore, the total work done to lift thirty 6 kg boxes onto a shelf 1.5m high is 2648.7 Joules.