Choose ONE ANSWER. While lifting a barbell over your head (just the lifting part
ID: 2037097 • Letter: C
Question
Choose ONE ANSWER. While lifting a barbell over your head (just the lifting part, not the lowering part that inexorably follows) the change in gravitational energy...
a) is zero
b) is greater than the magnitude of the change in chemical energy
c) is equal to than the magnitude of the change in chemical energy
d) is less than the magnitude of the change in chemical energy
a) is zero
b) is greater than the magnitude of the change in chemical energy
c) is equal to than the magnitude of the change in chemical energy
d) is less than the magnitude of the change in chemical energy
Explanation / Answer
While lifting a barbell on over head the work done is zero. So the optio (a) is correct