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- Question
Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is
Options- A. 20 kg
- B. 25 kg
- C. 30 kg
- D. 35 kg
- E. 40 kg.
- Correct Answer
- 25 kg
- 1. 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 efficiency of the lifting machine is
Options- A. 50%
- B. 40%
- C. 55%
- D. 30%. Discuss
- 2. The locus of the instantaneous centre of a moving rigid body, is
Options- A. straight line
- B. involute
- C. centroid
- D. spiral. Discuss
- 3. If the gravitational accelerational at any place is doubled, the weight of a body, will
Options- A. be reduced to half
- B. be doubled
- C. not be affected
- D. none of these. Discuss
- 4. The equation of motion of a particle starting from rest along a straight line is x = t3 - 3t2 + 5. The ratio of the accelerations after 5 sec and 3 sec will be
Options- A. 2
- B. 3
- C. 4
- D. 5 Discuss
- 5. When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as
Options- A. imaginary work
- B. negative work
- C. virtual work
- D. none of these. Discuss
- 6. The vertical reaction at the support A of the structure shown in below figure, is
Options- A. 1 t
- B. 2 t
- C. 3 t
- D. 2.5 t. Discuss
- 7. Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by
Options- A. its longer side"
- B. its shorter side"
- C. the diagonal of the parallelogram which does not pass through the point of intersection of the forces"
- D. the diagonal of the parallelogram which passes through the point of intersection of the forces"
- E. half the sum of the diagonals". Discuss
- 8. Engineer's units of force, is
Options- A. Newton in absolute units
- B. Dyne in absolute units
- C. Newton and dyne in absolute units
- D. All the above. Discuss
- 9. To attain the synchronous orbit, the launch of a satellite, is done from a place
Options- A. on equator
- B. on 30° latitude
- C. on 45° latitude
- D. on 60° latitude
- E. on the poles. Discuss
- 10. The tension in a cable supporting a lift
Options- A. is more when the lift is moving downwards
- B. is less when the lift is moving upwards
- C. remains constant whether its moves downwards or upwards
- D. is less when the lift is moving downwards. Discuss
Applied Mechanics problems
Search Results
Correct Answer: 40%
Correct Answer: centroid
Correct Answer: be doubled
Correct Answer: 2
Correct Answer: virtual work
Correct Answer: 3 t
Correct Answer: the diagonal of the parallelogram which passes through the point of intersection of the forces"
Correct Answer: Newton in absolute units
Correct Answer: on equator
Correct Answer: is less when the lift is moving downwards.
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