verb
1
BAD : You can't oblige children to study if they don't want to.
GOOD : You can't force children to study if they don't want to.
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If someone makes you do something that you do not want to do, they force/compel you to do it (or make you do it): 'They forced him to hand over the money by threatening to kill him.'
2
BAD : In order to pay the hospital bill, it obliged me to sell my car.
GOOD : In order to pay the hospital bill, I was obliged to sell my car.
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be/feel obliged to do sth (= have to/feel that you have to do something): 'Doctors are obliged to keep their patients' records secret.' 'Since the temperature outside was below freezing, I felt obliged to invite them in.'