Which of the following is not the unit of distance ?
A. angstrom
B. light year
C. micron
D. millimeter
E. milestone
Strength of Materials
The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to__________________?
The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to__________________?
A. the algebraic sum of the resolved parts of the forces in the given direction
B. the sum of the resolved parts of the forces in the given direction
C. the difference of the forces multiplied by the cosine of 9
D. the sum of the forces multiplied by the sine of 9
E. the sum of the forces multiplied by the tangent of 9
Which is the correct statement about law of polygon of forces ?
Which is the correct statement about law of polygon of forces ?
A. if any number of forces acting at a point can be represented by the sides
of a polygon taken in order, then the forces are in equilibrium
B. if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium
C. if a polygon representing forces acting at a point is closed then forces are in equilibrium
D. if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium
E. none of the above
If a number of forces act simultaneously on a particle, it is possible_________________?
If a number of forces act simultaneously on a particle, it is possible_________________?
A. not a replace them by a single force
B. to replace them by a single force
C. to replace them by a single force through C.G.
D. to replace them by a couple
E. to replace them by a couple and a force
A force acting on a body may_______________?
A force acting on a body may_______________?
A. introduce internal stresses
B. balance the other forces acting on it
C. retard its motion
D. change its motion
E. all of the above
Forces are called concurrent when their lines of action meet in_______________?
Forces are called concurrent when their lines of action meet in_______________?
A. one point
B. two points
C. plane
D. perpendicular planes
E. different planes
The unit of force in S.I. units is_________________?
The unit of force in S.I. units is_________________?
A. kilogram
B. newton
C. watt
D. dyne
E. joule
A force is completely defined when we specify________________?
A force is completely defined when we specify________________?
A. magnitude
B. direction
C. point of application
D. all of the above
E. none of the above
Effect of a force on a body depends upon________________?
Effect of a force on a body depends upon________________?
A. magnitude
B. direction
C. position or line of action
D. all of the above
E. none of the above
Forces are called coplanar when all of them acting on body lie in________________?
Forces are called coplanar when all of them acting on body lie in________________?
A. one point
B. one plane
C. different planes
D. perpendicular planes
E. different points