Question

While opening a tap with two fingers, the forces applied by the fingers are:
A) Equal in magnitude
B) Parallel to each other
C) Opposite in direction
D) All the above

Answer 1

Hint: As we know that if we want to move anything, we should apply force. Similarly In this case, while opening a tap with two fingers we should apply equal force. One finger should move backward and another should move forward which will be in the opposite direction.

Complete answer:

From the above figure, Finger \[1\] applies force in \[X\] direction and finger \[2\] applies force in \[y\] direction which is quite opposite of \[X\] direction.
So, from the above figure we can come to a conclusion that forces applied by the two fingers are in the opposite direction to each other.

Hence the correct option \[C\].

Additional information:
When an object is not moving and is influenced by the force which results in the movement of the object. If you drop any object from a certain height, the force of gravity causes it to move.

Note: We can get a doubt over here that why can’t we open the tap with one finger?
Here is the reason.
1. Rotational motion is involved in the opening of a tap.
2. According to rotational motion, if every particle in a body moves in a circle along the axis of rotation.
3. Hence, while opening a tap with a single finger, the force is applied only in one direction. By applying two forces in opposite directions, it is easy to turn on the tap.