41. Two forces of equal magnitude ‘P’ act at an angle 7 to each other. Their resultant will be :
(५) வால்ட்‌ ‏8م‎ நால்‌
2 2
¬ a ಡೆ!
(0) Pos (D) (आए
49. The unit of energy in SI system of units is:
(A) watt (3) dyne
(८) joule (D) kg-m
43. The moment of inertia of a thin dise of mass ‘m* and radius ‘r’, about an axis passing
through its centre of gravity and perpendicular to the plane of the disc is :
ಯ) 0.5 mr? ಗು ೫
(൮ 0.25 mr? (D) 2 mr?
44. The ratio of limiting friction to the normal reaction between the two bodies is defined as :
(A) Sliding friction (B) Angle of friction
(C) Friction of resistance (90) Coefficient of friction
46. The logs of kinetic energy during the impaet of collision of two inelastic bodies (mass = m,,
iy, velocities = u,,u,) is given by :
Jn, My பாடி
۸ ന படச்‌ ∣− −∶∣
(ಗಿ) ಗ್‌ (५ - ५२) (B) 2(m, +m,) (u, ~ Uy)
0 ವಾಗ ಛೂ Oey
©) 2(m, eae ५५) பி 2(m, ಫ್‌ ta)
46. The maximum deflection at the centre of a simply supported beam of length ‘i’ with a
uniformly distributed load w /unit length is given by :
நமா” ⋅ wl"
۸ 102 7 ம்‌ 384 11
bul" 5ம[*
0 (0)
© 384 EI @) 192 81
47. Ifthe momentum of a given body is doubled, its kinetic energy ೪111:
(A) Increase by four times (B) Increase by two times
(C) Increase by cight times (D) Gets halved
48. For a given velocity of projectile, the horizontal range will be maximum when angle of
projection with the horizontal is :
(A) 45° (B) 30°
(C) 60° (1) 90°
005/2016 8 A