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  • Question

  • A number of forces acting at a point will be in equilibrium, if


  • Options
  • A. all the forces are equally inclined
  • B. sum of all the forces is zero
  • C. sumof resolved parts in the vertical direction is zero (i.e. ?V = 0)
  • D. none of these

  • Correct Answer
  • sumof resolved parts in the vertical direction is zero (i.e. ?V = 0) 

    • Engineering Mechanics problems

    Search Results

    • 1. When a body of mass m attains a velocity v from rest in time t, then the kinetic energy of translation is

    • Options
    • A. mv2
    • B. mgv2
    • C. 0.5 mv2
    • D. 0.5 mgv2
      • Discuss
    • 2. Joule is the unit of

    • Options
    • A. force
    • B. work
    • C. power
    • D. velocity
      • Discuss
    • 3. A screw jack used for lifting the loads is

    • Options
    • A. a reversible machine
    • B. a non-reversible machine
    • C. an ideal machine
    • D. none of these
      • Discuss
    • 4. The length of a second's pendulum is

    • Options
    • A. 94.9cm
    • B. 99.4cm
    • C. 100cm
    • D. 101cm
      • Discuss
    • 5. The negative acceleration is called retardation.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplaner concurrent forces.

    • Options
    • A. lie
    • B. do not lie
      • Discuss
    • 7. The forces, whose lines of action are parallel to each other and act in the same directions, are known as

    • Options
    • A. coplaner concurrent forces
    • B. coplaner non-concurrent forces
    • C. like parallel forces
    • D. unlike parallel forces
      • Discuss
    • 8. The moment of inertia of a solid cone of mass m and base radius r about its vertical axis is

    • Options
    • A. 3mr2/5
    • B. 3mr2/10
    • C. 2mr2/5
    • D. 4mr2/5
      • Discuss
    • 9. The force induced in the string AB due to the load W, as shown in the below figure is

    • Options
    • A. W sin ?
    • B. W cos ?
    • C. W sec ?
    • D. W cosec ?
      • Discuss
    • 10. According to Newton's first law of motion,

    • Options
    • A. every body continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force
    • B. the rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts
    • C. to every action, there is always an equal and opposite reaction
    • D. none of the above
      • Discuss

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