Applied Mechanics And Graphic Statics - Study Mode

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[#191] The velocity of a moving body, is

(A) A vector quantity

(B) A scalar quantity

(C) A constant quantity

(D) None of these

Correct Answer

(A) A vector quantity

[#192] To double the period of oscillation of a simple pendulum

(A) The mass of its bob should be doubled

(B) The mass of its bob should be quadrupled

(C) Its length should be quadrupled

(D) Its length should be doubled

Correct Answer

(C) Its length should be quadrupled

[#193] A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec 2 . Time required to traverse a distance of 1.5 m, is

(A) 40 sec

(B) 30 sec

(C) 20 sec

(D) 15 sec

Correct Answer

(C) 20 sec

[#194] The equation of motion of a particle starting from rest along a straight line is x = t 3 - 3t 2 + 5. The ratio of the velocities after 5 sec and 3 sec will be

(A) 2

(B) 3

(C) 4

(D) 5

Correct Answer

(D) 5

[#195] The equation of motion of a particle starting from rest along a straight line is x = t 3 - 3t 2 + 5. The ratio of the accelerations after 5 sec and 3 sec will be

(A) 2

(B) 3

(C) 4

(D) 5

Correct Answer

(D) 5