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- Question
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is
Options- A. 15
- B. 18
- C. 20
- D. 26.
- Correct Answer
- 20
- 1. The angle of projection for a range is equal to the distance through which the particle would have fallen in order to acquire a velocity equal to the velocity of projection, will be
Options- A. 30°
- B. 45°
- C. 60°
- D. 75°. Discuss
- 2. The intrinsic equation of catenary is
Options- A. S = c tan ?
- B. y = c cosh x/c
- C. y = c cosh ?
- D. y = c sinh ?. Discuss
- 3. The force which produces an acceleration of 1 m/sec2 in a mass of one kg, is called
Options- A. dyne
- B. Netwon
- C. joule
- D. erg. Discuss
- 4. In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is
Options- A. 1.5
- B. 5
- C. 25
- D. 314 Discuss
- 5. A body of weight w placed on an inclined plane is acted upon by a force P parallel to the plane which causes the body just to move up the plane. If the angle of inclination of the plane is ? and angle of friction is ?, the minimum value of P, is
Options- A.
- B.
- C.
- D.
Discuss
- 6. In simple harmonic motion, acceleration of a particle is proportional to
Options- A. rate of change of velocity
- B. displacement
- C. velocity
- D. direction
- E. none of these. Discuss
- 7. A projectile is fired at an angle ? to the vertical. Its horizontal range will be maximum when ? is
Options- A. 0°
- B. 30°
- C. 45°
- D. 60°
- E. 90°. Discuss
- 8. A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is
Options- A. 0.25
- B. 0.33
- C. 0.40
- D. 0.50
- E. 0.55 Discuss
- 9. If a spherical body is symmetrical about its perpendicular axes, the moment of inertia of the body about an axis passing through its centre of gravity as given by Routh's rule is obtained by dividing the product of the mass and the sum of the squares of two semi-axes by n where n is
Options- A. 2
- B. 3
- C. 4
- D. 5. Discuss
- 10. The phenomenon of collision of two elastic bodies takes place because bodies
Options- A. immediately after collision come momentarily to rest
- B. tend to compress each other till they are compressed maximum possible
- C. attempt to regain its original shape due to their elasticities
- D. all the above. Discuss
Applied Mechanics problems
Search Results
Correct Answer: 75°.
Correct Answer: S = c tan ?
Correct Answer: Netwon
Correct Answer: 314
Correct Answer:
Correct Answer: displacement
Correct Answer: 45°
Correct Answer: 0.50
Correct Answer: 5.
Correct Answer: all the above.
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