Question

In which of the following cases is no work done?

a. A weightlifter lifts a barbell.
b. A weightlifter holds a barbell overhead.
c. A weightlifter slowly lowers a barbell.
d. A weightlifter drops a barbell and the barbell falls to the ground.

Answer 1

B

Step-by-step explanation:

The weightlifter Is only using his energy carrying it but there is no movement