MCQs of Fundamentals of Statics (Mechanics Of Solids - 3130608)

Mechanics Of Solids (3130608) MCQs

MCQs of Fundamentals of Statics

Showing 1 to 10 out of 14 Questions

The Law of Polygon of Forces states that

(a)	if a polygen representing the forces acting at point in a body is closed, the forces are in equilibrium
(b)	if forces acting on a point can be represented in magnitde and direction by the sides of a polygon taken in order, then the resultant of the forces will be represented in magnitude and direction by the closing side of the polygon
(c)	if forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side of the polygon, taken in opposite order
(d)	if forces acting on a point can be represented in magnitude and direction by the sides of a polygon in order, the forces are in equilibrium

Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by

(a)	its longer side
(b)	its shorter side
(c)	the diagonal of the parallelogram which does not pass through the point of intersection of the forces
(d)	the diagonal of the parallelogram which passes through the point of intersection of the forces

The resultant of two forces P and Q acting at an angle θ, is

(a)	$P^{2} + Q^{2} + 2 P S i n θ$
(b)	$P^{2} + Q^{2} + 2 P Q C o s θ$
(c)	$P^{2} + Q^{2} + 2 P Q T a n θ$
(d)	$\sqrt{P^{2} + Q^{2} + 2 P Q C o s θ}$

Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is

(a)	20 kg
(b)	25 kg
(c)	30 kg
(d)	35 kg

Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of

(a)	5 Newtons
(b)	8 Newtons
(c)	10 Newtons
(d)	12 Newtons

According to Law of Triangle of Forces

(a)	three forces acting at a point, can be rep-resented by the sides of a triangle, each side being in proportion to the force
(b)	three forces acting along the sides of a triangle are always in equilibrium
(c)	if three forces acting on a, point can be represented.in magnitude and direction, by the sides of a triangle taken in order, these will be in equilibrium
(d)	if the forces acting on a particle be represented in magnitude and direction by the two sides of a triangle taken in order, their resultant will be represented in magnitude and direction by the third side of the triangle, taken in opposite order

The resolved part of the resultant of two forces inclined at an angle θ in a given direction is

(a)	the algebraic sum of the resolved parts of the forces in the direction
(b)	arithmetical sum of the resolved parts of the forces in the direction
(c)	difference of the forces multiplied by cosine θ°
(d)	sum of the forces multiplied by the sine θ

Lami's theorem states that

(a)	three forces acting at a point are always in equilibrium
(b)	if three forces acting on a point can be represented in magnitude and direction by the sides of a triangle, the point will be in a state of equilibrium
(c)	three coplanar forces acting at a point will be in equilibrium if each force is proportional to the sine of the angle between the other two
(d)	three coplanar forces acting at a point will be in equilibrium if each force is inversely proportional to the sine of the angle between the other two

If two forces acting at a point are in equilibrium, they must be equal in magnitude and their line of action must be along

(a)	the same line in the same sense
(b)	the same line in the opposite sense
(c)	the perpendicular to both the lines
(d)	none of these

10.

If two forces P and Q (P > Q) act on the same straight line but in opposite direction, their resultant, is

(a)	P + Q
(b)	P / Q
(c)	Q / P
(d)	P - Q

Showing 1 to 10 out of 14 Questions