If 'E' represents total mechanical energy of a system while 'U' represents the
potential energy, then E-U is
1) always zero
2) always lesser than zero
3) always greater than zero
4) either positive or negative
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If 'E' represents total mechanical energy of a system while 'U' represents the
potential energy, then E-U is
1) always zero
2) always lesser than zero
3) always greater than zero
4) either positive or negative
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