Minimum potential energy of a system will be in the position of________________?

Related Mcqs:

1. If the kinetic energy and potential energy of a simple harmonic oscillator of amplitude A are both equal to half the total energy, then the displacement is equal to_________________?

   A. A
   B. A/2
   C. A/V2
   D. AV2

2. The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by__________________?

   A. 1:2
   B. 1:1
   C. 2:1
   D. 3:1

3. The potential energy of a particle falling through a straight shaft drilled through the earth (assumed homogenous and spherical) is proportional to____________________?

   A. log r
   B. r
   C. r2
   D. 1/r

   where r is the distance of’the particle from centre of the earth

4. A simple pendulum of length / has an energy E, when its amplitude is A. If the length of pendulum is doubled, the energy will be___________________?

   A. E
   B. E/2
   C. 2E
   D. 4E

5. A simple pendulum of length 1 has an energy E when its amplitude is A. If its amplitude is increased to 2 A, the energy becomes____________________?

   A. E
   B. E/2
   C. 2E
   D. 4E

6. In a simple harmonic motion, the position of equilibrium is always_________________?

   A. stable
   B. unstable
   C. neutral
   D. none of the above

7. A particle moves in a straight line and its position is defined by the equation x = 6 t2 – t3 where t is expressed in seconds and x in meters. The maximum velocity during the motion is_________________?

   A. 6 m/sec
   B. 12 m/sec
   C. 24 m/sec
   D. 48 m/sec

8. Minimum pull in a suspended cable with supports at two ends is equal to____________________?

   A. horizontal thrust
   B. support reactions
   C. resultant of horizontal thrust and support reaction
   D. half the weight of the cable

9. A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are____________________?

   A. 1346.3 kN and 1500 kN
   B. 1436.2 kN and 1250 kN
   C. 1346.3 kN and 1250 kN
   D. 1436.2 kN and 1500 kN

10. The angles between two forces to make their resultant a minimum and a maximum respectively are__________________?

    A. 0° and 90°
    B. 180° and 90°
    C. 90° and 180°
    D. 180° and 0°