A. increase
B. decrease
C. remain same
D. increase initially and then decrease
E. unpredictable
A. reducing the problem of kinetics to equivalent statics problem
B. determining stresses in the truss
C. stability of floating bodies
D. designing safe structures
E. solving kinematic problems
A. three forces acting at a point will be in equilibrium
B. three forces acting at a point can be represented by a triangle, each side being proportional to force
C. if three forces acting upon a particle are represented in magnitude and
direction by the sides of a triangle, taken in order, they will be in equilibrium
D. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
E. none of the above
A. limiting friction
B. sliding friction
C. rolling friction
D. kinematic friction
E. dynamic friction
A. mechanical advantage is greater than velocity ratio
B. mechanical advantage is equal to velocity ratio
C. mechanical advantage is less than velocity ratio
D. mechanical advantage is unity
E. none of the above
A. the center of heavy portion
B. the bottom surface
C. the mid point of its axis
D. all of the above
E. none of the above
A. same in both cases
B. zero in first case
C. different in both cases
D. data are not sufficient to determine same
E. none of the above