Skip to main content
Physics
Us18's user avatar
Us18's user avatar
Us18's user avatar
Us18
  • Member for 7 years, 10 months
  • Last seen more than 7 years ago
Profile Activity

14 Actions

All Accepts Posts Badges Comments Revisions Reviews Suggestions
awarded
 Notable Question
awarded
 Popular Question
awarded
 Supporter
awarded
 Teacher
answered
Reflection in water
answered
Weightlessness under freefall
awarded
 Scholar
awarded
 Informed
accepted
work done is zero if displacement of point of application of force is zero but why can't we assume forces on COM and its displacement
comment
work done is zero if displacement of point of application of force is zero but why can't we assume forces on COM and its displacement
i understand that but if i assume my body as system then work done by normal should be N × displacement of COM shouldn't it be ??
comment
work done is zero if displacement of point of application of force is zero but why can't we assume forces on COM and its displacement
but is we assume our body as a system then normal is ext force and there is displacement of centre of mass
comment
work done is zero if displacement of point of application of force is zero but why can't we assume forces on COM and its displacement
but shouldn't it be as normal acts on the feet and its displacement is zero while normal is acting?
awarded
 Student
asked
work done is zero if displacement of point of application of force is zero but why can't we assume forces on COM and its displacement