Question

3. Choose the wrong statement.
a) unit of force is newton
c) Force is always conserved
b) Force changes shape of body
d) Force is vector quantity
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Answer 1

Answer:

Force is always conserved

Explanation:

Answer 2

Answer:

The wrong statement is c) Force is always conserved.

Explanation:

Force is defined as a push or pull exerted on any object which changes its present state.

• Unit of Force is Newton. It is expressed as:

          $Force=mass$ × $acceleration$

          $F=ma (kg.m/s^{2} )\\F=ma (Newton)$

• Force is "not" always conserved. When the word done by force is dependent on the path followed between initial and final points. Example of non-conservative force is friction, tension, normal force etc.
• Force changes the shape of the body as it can lead to depression on object's surface or stretching  or bending of the object.
• Force is a vector quantity as it has magnitude as well as direction.