wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

If the P.E of a system decreases by 40 J while the K.E remains constant, then the work done by external agent will be.

A
40 J
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
-40 J
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
20 J
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
0 J
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B -40 J
If the final Potential energy of a system is lesser than its initial potential energy, then the internal conservative force must have done some positive work. To keep the K.E constant, the work done by external agent has to be negative.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon