A person using a lever applies 98 Newtons to lift a 20-kilogram box. They apply the force over a distance of 4 meters to lift the box a distance of 2 meters. How much work is done? (1 point)
• 196 Joules
• 392 Joules
• 40 Joules
• 80 Joules
To calculate the work done, we use the formula:
Work = force applied * distance over which the force is applied * cos(theta)
In this case, the force applied is 98 Newtons, the distance over which the force is applied is 4 meters, and the angle between the force and the direction of motion is 0 degrees (cos(0) = 1). So, the work done is:
Work = 98 N * 4 m * 1 = 392 Joules
Therefore, the correct answer is:
• 392 Joules