A force of 100 Newtons acts for 0.5 seconds on a body of mass 20 kg which is initially at rest. The velocity attained by the body is
A.5 m/s
B.2.5 m/s
C.20 m/s
D.0.5 m/s
Category: Applied Mechanics Mcqs
According to principle of transmissiblity of forces, when a force acts upon a body, its effect is
A.minimum when it acts at C.G. of the body
B.maximum when it acts at C.G. of the body
C.different at different points of the body
D.same at every point in its line of action
Using force, length and time as fundamental quantities, the dimensions of mass would be
A.FL-1T+2
B.FL-2T+1
C.FL-2T+2
D.FL-1T+1
The units of moment of inertia are
A.kg-m2
B.kg/m2
C.kg/m
D.m4
E.kgm4
A man weighing 60 kg jumps on a vehicle of weight 240 kg moving with a velocity of 36 km/hours. The velocity of the vehicle after the man has jumped would be
A.Less than 3.6 km/hour
B.3.6 km/hour
C.More than 3.6 km/hour
D.4.5 km/hour
E.None of the above
The law of conservation of mechanical energy is valid
A.Irrespective of the nature of force field
B.Only in gravitational field
C.Only if the total work done by the particle in moving around in a closed trajectory is zero
D.Only if the force is tangential to the trajectory
E.None of the above
ML2T-2 could be the dimension of all of the following EXCEPT:
A.Work
B.Energy
C.Torque
D.Power
Centroid of the are of circle shown in adjacement figure is
A.r sin (?/2)/2 ?, 0
B.2r sin (?)/?, 0
C.2 r sin (?/2)/?, 0
D.r sin (?)/?, 0
The weight of an object will be maximum when it is placed at
A.North pole
B.South pole
C.Equator
D.Centre of earth
E.Any of the above loctions
