How much work is needed to lift a 400kg engine upward 1.5 meters out of a car?
To find the amount of work needed to lift the engine, we need to use the formula:
Work = Force × Distance
First, we need to calculate the force required to lift the engine. The force needed is equal to the weight of the engine. The weight can be calculated using the formula:
Weight = Mass × Acceleration due to gravity
In this case, the mass of the engine is 400 kg, and the acceleration due to gravity is approximately 9.8 m/s².
Weight = 400 kg × 9.8 m/s² = 3920 N
Next, we can calculate the work by multiplying the force (3920 N) by the distance (1.5 meters).
Work = 3920 N × 1.5 m = 5880 Joules
Therefore, approximately 5880 Joules of work are needed to lift the 400 kg engine upward 1.5 meters out of the car.