Applied Mechanics And Graphic Statics - Practice Test

[#166] 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 the 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

Correct Answer

(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

[#167] The maximum frictional force which comes into play, when a body just begins to slide over the surface of a another body, is known

(A) Sliding friction

(B) Rolling friction

(C) Limiting friction

(D) None of these

Correct Answer

(C) Limiting friction

[#168] A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be

(A) 0.5 m/sec

(B) 1.5 m/sec

(C) 2.5 m/sec

(D) 3.5 m/sec

Correct Answer

(C) 2.5 m/sec

[#169] A ball of mass 1 kg moving with a velocity of 2 m/sec collides a stationary ball of mass 2 kg and comes to rest after impact. The velocity of the second ball after impact will be

(A) Zero

(B) 0.5 m/sec

(C) 1.0 m/sec

(D) 2.0 m/sec

Correct Answer

(C) 1.0 m/sec

[#170] The units of inertia of mass are

(A) kg/m

(B) kg/m 2

(C) m 4

(D) kg-m 2

Correct Answer

(D) kg-m 2

Applied Mechanics And Graphic Statics - Study Mode

[#166] Lami's theorem states that

Correct Answer

[#167] The maximum frictional force which comes into play, when a body just begins to slide over the surface of a another body, is known

Correct Answer

[#168] A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be

Correct Answer

[#169] A ball of mass 1 kg moving with a velocity of 2 m/sec collides a stationary ball of mass 2 kg and comes to rest after impact. The velocity of the second ball after impact will be

Correct Answer

[#170] The units of inertia of mass are

Correct Answer