When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are________________?

Related Mcqs:

1. A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is___________________?

   A. n rpm
   B. n/2 rpm
   C. n/4 rpm
   D. 2n rpm

2. A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec, . The work required to stop the hoop is______________?

   A. 2 J
   B. 4 J
   C. 6 J
   D. 8 J

3. A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is_______________?

   A. (1/3) g sin0
   B. (2/5) g sin 0
   C. (3/7) g sin 0
   D. (5/7) g sin0

   where g is acceleration due to gravity

4. A disc of mass 4 kg, radius 0.5m and moment of inertia 3 kg-m2 rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is ___________________?

   A. 50 J
   B. 150 J
   C. 200 J
   D. 400 J

5. A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is________________?

   A. (1/3) g sinB
   B. (2/3) g cos 9
   C. (2/3) g sin 0
   D. g sin 9

   where ‘g’ is acceleration due to gravity and 0 is inclination of plane with horizontal

6. 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

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. A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will____________________?

   A. never meet
   B. meet after 1 sec
   C. meet after 5 sec
   D. meet after 10 sec

9. When a body slides down an inclined surface, the acceleration of the body is given by__________________?

   A. g
   B. gsinG
   C. g cos 6
   D. g tan 6

   where ‘g’ is acceleration due to gravity and 9 is the angle of inclination of surface with the horizontal

10. A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is_____________________?

    A. 4
    B. 6 7i
    C. 8TC
    D. 8