Discussion
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- Question
According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.
Options- A. True
- B. False
- Correct Answer
- False
- 1. The friction experienced by a body, when in motion, is known as
Options- A. rolling friction
- B. dynamic friction
- C. limiting friction
- D. static friction Discuss
- 2. Static friction is always __________ dynamic friction.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 3. The term 'force' may be defined as an agent which produces or tends to produce, destroys or tends to destroy motion.
Options- A. Agree
- B. Disagree Discuss
- 4. The range of a projectile is maximum, when the angle of projection is
Options- A. 30°
- B. 45°
- C. 60°
- D. 90° Discuss
- 5. 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
- 6. In the shown figure, if the angle of inclination of the plane is increased, then acceleration of the system will
Options- A. increase
- B. decrease
- C. remain the same Discuss
- 7. The mechanical advantage of a lifting machine is the ratio of
Options- A. distance moved by effort to the distance moved by load
- B. load lifted to the effort applied
- C. output to the input
- D. all of the above Discuss
- 8. A resultant force is a single force which produces the same effect as produced by all the given forces acting on a body.
Options- A. True
- B. False Discuss
- 9. The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as
Options- A. principle of independence of forces
- B. principle of resolution of forces
- C. principle of transmissibility of forces
- D. none of these Discuss
- 10. Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the ball with velocity v is made to struck the second ball. Both the balls after impact will move with a velocity
Options- A. v
- B. v/2
- C. v/4
- D. v/8 Discuss
Engineering Mechanics problems
Search Results
Correct Answer: dynamic friction
Correct Answer: greater than
Correct Answer: Agree
Correct Answer: 45°
Correct Answer: limiting friction
Correct Answer: decrease
Correct Answer: load lifted to the effort applied
Correct Answer: True
Correct Answer: principle of resolution of forces
Correct Answer: v/2
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