To calculate the work done by the weight lifter in lifting the weights, we can use the formula:
Work = Force × Distance × cosθ
where:
- Force is the applied force in the direction of displacement,
- Distance is the displacement,
- θ is the angle between the force and the direction of displacement.
In this case, the weight lifter is moving the weights vertically upward, so the angle θ between the force applied by the weight lifter and the direction of displacement is 0 degrees (cos 0 = 1).
Given: Force = 350 N Distance = 2.00 m θ = 0 degrees
Plugging these values into the formula:
Work = 350 N × 2.00 m × cos 0 = 350 N × 2.00 m × 1 = 700 J
Therefore, the weight lifter does 700 joules (J) of work in lifting the weights.