Civil Engineering - Applied Mechanics

16. 

If v and ω are linear and angular velocities, the centripetal acceleration of a moving body along the circular path of radius r, will be

A.
B.
C.
D.
E. rω.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

17. 

If two forces of 3 kg and 4 kg act at right angles to each other, their resultant force will be equal to

A. 7 kg
B. 1 kg
C. 5 kg
D. 1/7 kg
E. none of these.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

18. 

The c.g. of the shaded area of the below figure from the x-axis is

A.
B.
C.
D.
E.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

19. 

Two shots fired simultaneously from the top and bottom of a vertical tower with elevations of 30° and 45° respectively strike a target simultaneously. If horizontal distance of the target from the tower is 1000 m, the height of the tower is

A. 350 m
B. 375 m
C. 400 m
D. 425 m.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

20. 

For the given values of initial velocity of projection and angle of inclination of the plane, the maximum range for a projectile projected upwards will be obtained, if the angle of projection is

A. α = -
B. α = +
C. α = -
D. α = -
E. α = -

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.