41. If two bodies having masses m1 and m2 (m1 > m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.
42. The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as
43. In the shown figure, if the angle of inclination of the plane is increased, then acceleration of the system will
44. Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to
45. The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is
46. A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is
47. A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act
48. A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act
49. The moment of inertia of a rectangular section 3 cm wide and 4 cm deep about X-X axis is
50. The product of either force of couple with the arm of the couple is called
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