A. 30°
B. 45°
C. 60°
D. 120°
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Related Mcqs:
- 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...
- The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then_________________?
- A. P = R B. Q = R C. P = Q D. None of the above is correct...
- 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°...
- When two forces, each equal to P, act at 90° to each other, then the resultant will be_____________?
- A. P B. PV2 C. P/V2 D. 2P...
- The condition of equilibrium for any system of forces in a plane is____________________?
- A. that polygon of forces must close B. that resultant couple must be zero C. both (A) and (B) D. none of the above...
- If the given forces P,, P2, P3 and P4 are such that the force polygon does not close, then the system will___________________?
- A. be in equilibrium B. always reduce to a resultant force C. always reduce to a couple D. both (A) and (C)...
- The force polygon representing a set of forces in equilibrium is a_____________________?
- A. triangle B. open polygon C. closed polygon D. parallelogram...
- 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...
- 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...
- If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is__________________?
- A. zero B. maximum C. minimum D. unpredictable...
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