Question

1.
A book is placed on a horizontal table. The angle
between the normal force by the book on the table
and the weight of the book is
(1) 180°
(2) 90°
(3) 60°
(4) 0​

Answer 1

Answer:

1. 180 degree angle ; because horizontal table is flat and straight & we know that the straight angle is 180 degree

Answer 2

The correct option is (1) "180 degrees".

Explanation:

When an object is placed on a horizontal table, the forces acting on it are given by :

1. Weight of the book

2. Normal force

The weight of the book is given by mg and the normal force is the force that balances its weight.

It is clear that both weight of the book and the normal force lie on a line and we know that a line makes an angle of 180 degrees. Hence, the correct option is (1) "180 degrees.

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