MECHANICAL ENGG MECHANICS QUESTION ANSWER

MECHANICAL ENGG MECHANICS QUESTION  ANSWER


The velocity ratio in case of an inclined plane inclined at angle θ to the horizontal and weight being pulled up the inclined plane by vertical effort is
A. sin θ
B. cos θ
C. tan θ
D. cosec θ
Answer: Option A


7. The range of projectile on a downward inclined plane is __________ the range on upward inclined plane for the same velocity of projection and angle of projection.
A. less than
B. more than
C. equal to
Answer: Option B


8. The angle of inclination of a vehicle when moving along a circular path __________ upon its mass.
A. depends
B. does not depend
Answer: Option B


9. A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)
A. P = W tanα
B. P = W tan(α + φ)
C. P = W (sinα + μcosα)
D. P = W (cosα + μsinα)
Answer: Option C

10. If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
A. 30°
B. 60°
C. 90°
D. 120°
Answer: Option D