A weight lifter lifts a set of weights a vertical
distance of 2.07 m.
If a constant net force of 335 N is exerted
on the weights, how much net work is done on
the weights?
Answer in units of J
Work = F*d = 335 * 2.07 = 693.5 J.
To calculate the net work done on the weights, we need to use the formula:
Net Work = Force x Distance x cos(angle)
Where:
- Force is the magnitude of the applied force (335 N)
- Distance is the vertical distance the weights are lifted (2.07 m)
- Angle is the angle between the direction of the applied force and the direction of the displacement. Since the weights are lifted vertically, the angle is 0 degrees, and cos(0) = 1.
So, we can simplify the formula to:
Net Work = Force x Distance
Plugging in the values, we have:
Net Work = 335 N x 2.07 m
Calculating this gives us:
Net Work = 694.45 J
Therefore, the net work done on the weights is 694.45 Joules (J).