Which of the following pairs does not have identical dimensions ?
(A) Torque and energy
(B) Momentum and impulse
(C) Energy and work
(D) Mass and moment of inertia
Three coplanar forces acting on a body keep it in equilibrium. They should therefore be_______________?
(A) Concurrent
(B) Non-concurrent
(C) Parallel
(D) Non-parallel
The resultant of two forces of equal magnitudes is also equal to the magnitude of the forces. The angle between the two forces is________________?
(A) 30°
(B) 60°
(C) 90°
(D) 120°
Which one is not correct for a vector A= 2i+2j+3k ?
(A) Has direction 45° with an x-axis
(B) Has magnitude 2
(C) Has magnitude 2 and direction °=45° with a y-axis
(D) Has magnitude -2
Cosθi^ + Sinθj^ is a_________________?
(A) Vector
(B) Position Vector
(C) Vector in the direction at angle θ with an x-axis
(D) The unit vector in the direction at angle θ with an x-axis
The rectangular coordinate system is also called______________?
(A) Polar coordinate system
(B) Cartesian coordinate system
(C) Cylindrical coordinate system
(D) Spherical coordinate system
Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then_____________?
(A) B is anti-parallel to A
(B) B is a negative vector of A
(C) B has a negative magnitude
(D) B is perpendicular to A
In which quadrant the two rectangular components of a vector have same sign ?
(A) 1st
(B) 2nd
(C) Both 1st and 3rd
(D) 4th