Q. 11 A body is said to move with Simple Harmonic Motion if its acceleration, is
A. Proportional to the square of the distance from the point of reference
B. Proportional to the distance from the point of reference and directed towards it
C. Always directed away from the centre, the point of reference
D. Inversely proportion to the distance from the point of reference
B. Proportional to the distance from the point of reference and directed towards it
Q. 12 An ordinate in a funicular polygon represents
A. Bending moment
B. Shear force
C. Equilibrium
D. Resultant force
A. Bending moment
Q. 13 A bullet weighing 200 g is fired horizontally with a velocity of 25 m/sec from a gun carried on a carriage which together with the gun weighs 100 kg. The velocity of recoil of the gun, will be
A. 1.5 m/see
B. 1.00 m/sec
C. 0.01 m/sec
D. 0.05 m/sec
D. 0.05 m/sec
Q. 14 The load shared by the member BC of the structure shown in below figure is
A. 4 t
B. 3 t
C. 23 t
D. 32 t
A. 4 t
Q. 15 The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then,
A. Q = R
B. P = Q
C. P = R
D. None of the above is correct
A. Q = R
Q. 16 A sphere is resting on two planes BA and BC which are inclined at 45° and 60° respectively with the horizontal. The reaction on the plane BA will be
A. More than that of BC
B. Equal to that on BC
C. Less than that on BC
D. None of these
A. More than that of BC
Q. 17 The moment of inertia of the shaded portion of the area shown in below figure about the X-axis, is
A. 329.34 cm4
B. 529.34 cm4
C. 229.34 cm4
D. 429.34 cm4
D. 429.34 cm4
Q. 18 A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is
A. 6 J
B. 8 J
C. 2 J
D. 4 J
D. 4 J
Q. 19 A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is
A. 80 m/sec
B. 90 m/sec
C. 70 m/sec
D. 75 m/sec
B. 90 m/sec
Q. 20 A stone is thrown vertically upwards with a vertical velocity of 49 m/sec. It returns to the ground in
A. 8 sec
B. 10 sec
C. 5 sec
D. 20 sec
B. 10 sec
