How much work is needed to lift a 400kg engine upward 1.5 meters out of a car?
To determine the amount of work needed to lift the engine, we need to use the formula for work:
Work = Force × Distance
In this case, the force required to lift the engine is equal to its weight, which can be calculated using the gravitational force formula:
Weight = mass × acceleration due to gravity
The acceleration due to gravity on Earth is approximately 9.8 m/s². Therefore, the weight of the engine would be:
Weight = 400 kg × 9.8 m/s² = 3920 N
Now that we have calculated the weight, we can calculate the work:
Work = Force × Distance
= Weight × Distance
Given that the distance is 1.5 meters, the work required would be:
Work = 3920 N × 1.5 m = 5880 Joules
Therefore, it would take approximately 5880 Joules of work to lift the 400 kg engine upward 1.5 meters out of the car.