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  • Question

  • A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was


  • Options
  • A. 0.5 m/sec2
  • B. 0.7 m/sec2
  • C. 1 m/sec2
  • D. 1 cm/sec2.

  • Correct Answer
  • 0.7 m/sec2 

    • Applied Mechanics problems

    Search Results

    • 1. If a particle moves with a uniform angular velocity ? radians/sec along the circumference of a circle of radius r, the equation for the velocity of the particle, is

    • Options
    • A. v = ?
    • B. y = ? y - r
    • C. v = ?
    • D. v = ?
      • Discuss
    • 2. A train weighing 196 tonnes experiences a frictional resistance of per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is

    • Options
    • A. 510 m/sec
    • B. 105 m/sec
    • C. 53 m/sec
    • D. 35 m/sec.
      • Discuss
    • 3. The centre of gravity of a trapezoidal dam section whose top width is a, bottom width is b and the vertical side is a, from its vertical face is

    • Options
    • A.
    • B.
    • C.
    • D. none of these.
      • Discuss
    • 4. The acceleration of a particle moving along the circumference of a circle with a uniform speed, is directed

    • Options
    • A. radially
    • B. tangentially at that point
    • C. away from the centre
    • D. towards the centre.
      • Discuss
    • 5. If ? is the angular acceleration of a compound pendulum whose angular displace ment is ?, the frequency of the motion is

    • Options
    • A. 2??/?
    • B.
    • C. 4??/?
    • D. 2?? - ?.
      • Discuss
    • 6. The rate of change of displacement of a body with respect to its surrounding, is known

    • Options
    • A. velocity
    • B. acceleration
    • C. speed
    • D. none of these.
      • Discuss
    • 7. The frequency of oscillation on moon as compared to that on earth, will be

    • Options
    • A. 2.44 times more
    • B. 2.44 times less
    • C. 3 times less
    • D. 3 times more.
      • Discuss
    • 8. When a body moves round a fixed axis, it has

    • Options
    • A. a rotary motion
    • B. a circular motion
    • C. a translatory
    • D. a rotary motion and translatory motion.
      • Discuss
    • 9. If a body is acted upon by a number of coplaner non-concurrent forces, it may

    • Options
    • A. rotate about itself without moving
    • B. move in any one direction
    • C. move in any one direction rotating about itself
    • D. be completely at rest
    • E. all the above.
      • Discuss
    • 10. A geo-stationary satellite is one which orbits the earth with a velocity of rotation of

    • Options
    • A. moon
    • B. earth
    • C. sun
    • D. pole.
      • Discuss

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