Applied Mechanics And Graphic Statics - Study Mode

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[#26] It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to

(A) f

(B) $$frac{1}{{ ext{f}}}$$

(C) $$frac{1}{{{{ ext{f}}^2}}}$$

(D) f 2

Correct Answer

(D) f 2

[#27] A funicular polygon cannot be made to pass through

(A) One specified point

(B) Two specified points

(C) Three specified points

(D) More than three specified points

Correct Answer

(D) More than three specified points

[#28] A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is

(A) 16 m/sec

(B) 18 m/sec

(C) 20 m/sec

(D) 22 m/sec

Correct Answer

(C) 20 m/sec

[#29] If the angle of projection is double the angle of inclination ($$alpha $$) of the plane on which particle is projected, the ratio of times of flight up the inclined plane and down the inclined plane, will be

(A) $$frac{1}{2},cos alpha $$

(B) $$frac{1}{2},sin alpha $$

(C) $$frac{1}{2}, an alpha $$

(D) $$2cos alpha $$

Correct Answer

(A) $$frac{1}{2},cos alpha $$

[#30] One end of an elastic string of natural length / and modulus X is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance x, held at rest and then released. The motion is

(A) a simple harmonic motion

(B) a rectilinear motion with constant speed

(C) a damped oscillatory motion

(D) none of the above

Correct Answer

(A) a simple harmonic motion