Applied Mechanics And Graphic Statics - Practice Test

[#316] Effect of a force on a body depends upon its

(A) Direction

(B) Magnitude

(C) Position

(D) All the above

Correct Answer

(D) All the above

[#317] The following statement is one of the laws of Dynamic friction

(A) The force of friction always acts in a direction opposite to that in which a body is moving

(B) The magnitude of the kinetic friction bears a constant ratio to the normal reaction between two surfaces. The ratio being slightly less than that in the case of limiting friction

(C) For moderate speeds the force of friction remains constant but decreases slightly with the increase of speed

(D) All the above

Correct Answer

(D) All the above

[#318] If $$l$$ is the span of a light suspension bridge who's each cable carries total weight (w) and the central dip is y, the horizontal pull at each support, is

(A) $$frac{{{ ext{w}}l}}{{4{ ext{y}}}}$$

(B) $$frac{{{ ext{w}}l}}{{8{ ext{y}}}}$$

(C) $$frac{{{ ext{w}}l}}{{2{ ext{y}}}}$$

(D) $${ ext{w}}l$$

Correct Answer

(B) $$frac{{{ ext{w}}l}}{{8{ ext{y}}}}$$

[#319] 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

Correct Answer

(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

[#320] The dimensions of centrifugal force are

(A) M1 L2 T2

(B) M’L’T1

(C) M’L’T2

(D) M’L-‘T2

Correct Answer

(C) M’L’T2

Applied Mechanics And Graphic Statics - Study Mode

[#316] Effect of a force on a body depends upon its

Correct Answer

[#317] The following statement is one of the laws of Dynamic friction

Correct Answer

[#318] If $$l$$ is the span of a light suspension bridge who's each cable carries total weight (w) and the central dip is y, the horizontal pull at each support, is

Correct Answer

[#319] According to Law of Triangle of Forces

Correct Answer

[#320] The dimensions of centrifugal force are

Correct Answer