# A force P of 50 N and another force Q of unknown magnitude act at 90° to each other. They are balanced by a force of 130 N. The magnitude of Q is__________________?

A force P of 50 N and another force Q of unknown magnitude act at 90° to each other. They are balanced by a force of 130 N. The magnitude of Q is__________________? A. 60 N B. 80 N C.…

# If the resultant of two forces has the same magnitude as either of the force, then the angle between the two forces is____________________?

If the resultant of two forces has the same magnitude as either of the force, then the angle between the two forces is____________________? A. 30° B. 45° C. 60° D. 120° (Correct)

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

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° (Correct)

# The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then_________________?

The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then_________________? A. P = RB. Q = R C. P = Q D. None of the above is correct

# 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 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…

# The following is in unstable equilibrium__________________?

The following is in unstable equilibrium__________________? A. a uniform solid cone resting on a generator on a smooth horizontal plane B. a uniform solid cone resting on its base on a horizontal plane C. a solid cube resting on one…

# A uniform pyramid and a uniform prism of same height lie with their base on the surface. Which is more stable ?

A uniform pyramid and a uniform prism of same height lie with their base on the surface. Which is more stable ? A. pyramid (Correct) B. prism C. both equally stable D. none of the above

# A rigid body is in a stable equilibrium if the application of any force__________________?

A rigid body is in a stable equilibrium if the application of any force__________________? A. can raise the CG of the body but can not lower it (Correct) B. tends to lower the CG of the body C. neither raises…

# Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis ?

Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis ? A. disc with larger densityB. disc with smaller density C. both discs…

# 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 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.…