A girl pushes her physics book up against the horizontal ceiling of her room as shown in the figure
Channel: Doubtnut
Date: 2020-02-02

A girl pushes her physics book up against the horizontal ceiling of her room as shown in the figure. The book weights 20 N and she pushes upwards with a force of 25 N. The choices below list the magnitudes of the contact force `F_(CB)` between the celling and the book, and `F_(BH)` between the book and her hand. Select the correct pair.