500 Best Applied Mechanics MCQ
Q33). The c.g. of a thin hollow cone of height h, above its base lies on the axis, at a height of
a).h/3
b).h/4
c).2h/3
d).3h/4
Correct Answer:
2h/3
Explanation:
Q34). Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is
a).20 kg
b).25 kg
c).30 kg
d).35 kg
Correct Answer:
25 kg
Explanation:
Q35). The C.G. of a right circular cone lies on its axis of symmetry at a height of
a).h/2
b).h/3
c).h/4
d).h/5
Correct Answer:
h/4
Explanation:
Q36). A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60° with horizontal, is
a).40 kg
b).60 kg
c).10 kg
d).100 kg.
Correct Answer:
10 kg
Explanation:
Q37). If a particle is projected inside a horizontal tunnel which is 554 cm high with a velocity of 60 m per sec, the angle of projection for maximum range, is
a).8°
b).9°
c).10°
d).11°
Correct Answer:
10°
Explanation:
Q38). The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth’s surface
a).uneven distribution of the gravitational field
b).gravity of the sun and the moon
c).aerodynamic forces
d).none of these.
Correct Answer:
none of these.
Explanation:
Q39). Newton’s law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation
a).is directly proportional to their velocity of approach
b).is inversely proportional to their velocity of approach
c).bears a constant ratio to their velocity of approach
d).is equal to the sum of their velocities of approach.
Correct Answer:
bears a constant ratio to their velocity of approach
Explanation:
Q40). Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of
a).5 Newtons
b).8 Newtons
c).10 Newtons
d).12 Newtons.
Correct Answer:
10 Newtons
Explanation: