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21.

Concurrent forces are those forces whose lines of action

A.	lie on the same line	B.	meet at one point
C.	meet on the same plane	D.	none of these

22.

If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium

Yes

23.

The forces, which meet at one point and their lines of action also lie on the same plane, are known as

A.	coplaner concurrent forces	B.	coplaner non-concurrent forces
C.	non-coplaner concurrent forces	D.	non-coplaner non-concurrent forces

24.

The forces, which do not meet at one point, but their lines of action lie on the same plane, are known as coplaner concurrent forces

Agree

Disagree

25.

The forces which meet at one point, but their lines of action

lie

do not lie

26.

The forces which do not meet at one point and their lines of action do not lie on the same plane are known as

A.	coplaner concurrent forces	B.	coplaner non-concurrent forces
C.	non-coplaner concurrent forces	D.	none of these

27.

Coplaner non-concurrent forces are those forces which

meet

do not meet

28.

Coplaner concurrent forces are those forces which

A.	meet at one point, but their lines of action do not lie on the same plane	B.	do not meet at one point and their lines of action do not lie on the same plane
C.	meet at one point and their lines of action also lie on the same plane	D.	do not meet at one point, but their lines of action lie on the same plane

29.

Non-coplaner concurrent forces are those forces which

A.	meet at one point, but their lines of action do not lie on the same plane	B.	do not meet at one point and their lines of action do not lie on the same plane
C.	meet at one point and their lines of action also lie on the same plane	D.	do not meet at one point, but their lines of action lie on the same plane

30.

Non-coplaner non-concurrent forces are those forces which

A.	meet at one point, but their lines of action do not lie on the same plane	B.	do not meet at one point and their lines of action do not lie on the same plane
C.	do not meet at one point, but their lines of action lie on the same plane	D.	none of the above