Applied Mechanics And Graphic Statics - Study Mode

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[#36] If a projectile is fired with an initial velocity of 10 m/sec at an angle of 60° to the horizontal, its horizontal and vertical velocity at the highest point of trajectory are

(A) 0 and 5 m/sec

(B) 5 m/sec and 0

(C) $$5sqrt 3 $$ xa0m/sec and 0

(D) 5 and $$5sqrt 3 $$ xa0m/sec

Correct Answer

(B) 5 m/sec and 0

[#37] The angle of projection for a range is equal to the distance through which the particle would have fallen in order to acquire a velocity equal to the velocity of projection, will be

(A) 30°

(B) 45°

(C) 60°

(D) 75°

Correct Answer

(D) 75°

[#38] An ordinate in a funicular polygon represents

(A) Shear force

(B) Resultant force

(C) Bending moment

(D) Equilibrium

Correct Answer

(C) Bending moment

[#39] The Centre of gravity of a 10 × 15 × 5 cm T section from its bottom, is

(A) 7.5 cm

(B) 5.0 cm

(C) 8.75 cm

(D) 7.85 cm

Correct Answer

(C) 8.75 cm

[#40] The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

(A) 5.88 m/sec

(B) 8.88 m/sec

(C) 10.88 m/sec

(D) 12.88 m/sec

Correct Answer

(C) 10.88 m/sec