A book on a table is pushed up by the:
AMuscle force
BEngine force
CNormal force
DMagnet force
Answer & Solution
Correct answer: C. Normal force
1. Two forces act on a book lying on a table.
2. Its weight pulls it down and something balances that.
3. The table pushes up with the normal force.
4. So the answer is the normal force.
_Source: NCERT Class 9 Science, Ch 6 'How Forces Affect Motion'_
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