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- Question
The centre of gravity of an equilateral triangle with each side a, is __________ from any of the three sides.
Options- A. 3a/2
- B. 23a
- C. a/23
- D. 32a
- Correct Answer
- a/23
- 1. If two blocks of equal mass are attached to the two ends of a light string and one of the blocks is placed over a smooth horizontal plane while the other is hung freely after passing over a smooth pulley, then the two blocks will have some motion.
Options- A. Agree
- B. Disagree Discuss
- 2. A redundant frame is also called __________ frame.
Options- A. perfect
- B. imperfect
- C. deficient Discuss
- 3. A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is ?. The effort applied parallel to the plane is given by(where ? = tan? = Coefficient of friction between the plane and the body.)
Options- A. P = W tan?
- B. P = W tan(? + ?)
- C. P = W (sin? + ?cos?)
- D. P = W (cos? + ?sin?) Discuss
- 4. A smooth cylinder lying on its convex surface remains in __________ equilibrium.
Options- A. stable
- B. unstable
- C. neutral Discuss
- 5. The bodies which rebound after impact are called
Options- A. inelastic bodies
- B. elastic bodies
- C. neither elastic nor inelastic bodies
- D. none of these Discuss
- 6. Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)
Options- A. v = u + a.t
- B. s = u.t + 1/2 a.t2
- C. v2 = u2+2a.s
- D. all of these Discuss
- 7. two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are
Options- A. 15 N and 5 N
- B. 20 N and 5 N
- C. 15 N and 15 N
- D. none of these Discuss
- 8. The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 9. The force which acts along the radius of a circle and directed away from the centre of the circle is called centrifugal force.
Options- A. Agree
- B. Disagree Discuss
- 10. The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as
Options- A. static friction
- B. dynamic friction
- C. limiting friction
- D. coefficient of friction Discuss
Engineering Mechanics problems
Search Results
Correct Answer: Agree
Correct Answer: imperfect
Correct Answer: P = W (sin? + ?cos?)
Correct Answer: unstable
Correct Answer: elastic bodies
Correct Answer: all of these
Correct Answer: 15 N and 5 N
Correct Answer: equal to
Correct Answer: Agree
Correct Answer: limiting friction
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