2) In order to determine the effects of a force, acting on a body, we must know

Answer is:

all of the above

Explanation:

In order to determine the effects of a force, acting on a body, we must know
* magnitude of the force
* line of action of the force
* nature of the force i.e. whether the force is push or pull

Engineering Mechanics MCQ with Answers

For more MCQ's Click Here

3) The unit of force in S.I. system of units is

Answer is:

Newton

Explanation:

In S.I system of units, the unit of force is Newton (briefly written as N). A Newton may be defined as the force, while acting upon a body of mass 1 kg, produces an acceleration of 1m/s² in the direction of which it acts.

1 N = 1 kg x 1 m/s² = 1 kg-m/s²

The unit of force in S.I. system of units is

4) One kg force is equal to

Answer is:

9.8N

Explanation:

One kg force is equal to 9.8 N.
1Kgf (one kilogram force) is the force exerted by one kilogram mass when it is kept in a gravitational field of magnitude 9.8m/s² .
And force equals to
F=ma
F=1Kg × 9.8m/s²
So 1kgf=9.8N

5) The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as

Answer is:

principle of resolution of forces

Explanation:

The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as principle of resolution of forces.