Question: A smooth cylinder lying on its convex surface remains in __________ equilibrium.
[A].

stable

[B].

unstable

[C].

neutral

Answer: Option B

Explanation:

No answer description available for this question.

Question: One kg force is equal to
[A].

7.8 N

[B].

8.9 N

[C].

9.8 N

[D].

12 N

Answer: Option C

Explanation:

No answer description available for this question.

Question: If a body is acted upon by a number of coplaner non-concurrent forces, it may
[A].

rotate about itself without moving

[B].

move in any one direction rotating about itself

[C].

be completely at rest

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: For any system of coplaner forces, the condition of equilibrium is that the
[A].

algebraic sum of the horizontal components of all the forces should be zero

[B].

algebraic sum of the vertical components of all the forces should be zero

[C].

algebraic sum of moments of all the forces about any point should be zero

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.

Question: According to the law of moments, if a number of coplaner forces acting on a particle are in equilibrium, then
[A].

their algebraic sum is zero

[B].

their lines of action are at equal distances

[C].

the algebraic sum of their moments about any point in their plane is zero

[D].

the algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.

Answer: Option C

Explanation:

No answer description available for this question.

Question: If a number of coplaner forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.
[A].

equal to

[B].

less than

[C].

greater than

Answer: Option A

Explanation:

No answer description available for this question.

Question: If a number of forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, then the forces are not in equilibrium.
[A].

Agree

[B].

Disagree

Answer: Option B

Explanation:

No answer description available for this question.

Question: If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.
[A].

change

[B].

does not change

Answer: Option B

Explanation:

No answer description available for this question.

Question: According to lami’s theorem
[A].

the three forces must be equal

[B].

the three forces must be at 120° to each other

[C].

the three forces must be in equilibrium

[D].

if the three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two

Answer: Option D

Explanation:

No answer description available for this question.

Question: 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

Answer: Option B

Explanation:

No answer description available for this question.