A. 1
B. e2*
C. e4*
D. e*72
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Related Mcqs:
- A light rope is loaded with many equal weights at equal horizontal intervals. The points of suspension on the rope lie on a_____________________?
A. parabola
B. catenary
C. cycloid
D. ellipse - A ladder of weight ‘w’ rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight ‘w’ is to walk to the top of it safely, is tan’1 x, where x is___________________?
A. 1/4
B. 1/3
C. 3
D. 4 - A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is_____________________?
A. less than (1/3) tan 0
B. less than (2/3) tan 0
C. less than (1/3) sin 6
D. less than (2/3) sin 6 - A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is___________________?
A. 1/3
B. 2/3
C. 1/9
D. 8/9 - Coefficient of friction depends on__________________?
A. nature of surfaces only
B. area of contact only
C. both (A) and (B)
D. none of the above - 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. 100 N
D. 120 N - At the instantaneous center, the velocity of the moving lamina at any instant is_________________?
A. zero
B. maximum
C. minimum
D. varying - The pole distance is measured in___________________?
A. distance scale
B. force scale
C. mass scale
D. time scale - The ratio of unit of force in gravitational system to that in absolute system is__________________?
A. 1
B. g
C. 1/g
D. none of the above
where ‘g’ is acceleration due to gravity - A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping ?
1) 1.0 in from the wall
2) 1.732 m from the wall
3) 1.0 m above the floor
4) 1.732 m above the floor
The correct answer is?A. (1) and (3)
B. (1) and (4)
C. (2) and (3)
D. (2) and (4)
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