Which these statements are true i) The frictional force on a sliding body on a plane is always directed at the angle normal to the inclination of the plane. ii) The Dynamic equilibrium is a condition of a moving body with constant velocity. iii) Deformation of a rigid body is possible especially when the applied force is very large.
Which these statements are true
i) The frictional force on a sliding body on a plane is always directed at the angle normal to the inclination of the plane.
ii) The Dynamic equilibrium is a condition of a moving body with constant velocity.
iii) Deformation of a rigid body is possible especially when the applied force is very large.
iv) Kinematics deals with the geometry of motion without reference to the forces causing the motion.
v) D’Alembert’s principle is used to model a equilibrium problem into an non equilibrium one.
vi) When the helix angle of a square thread used in a screw jack is more than the angle of repose, the load overhauls.
vii) The line of action of Equilibrant and Resultant forces of a system of forces are coincident.
viii) The coefficient of static friction is more than that of dynamic friction.
ix) Three forces in equilibrium are always concurrent.
x) The direction of the moment vector is in the plane containing the force and radius
xi) A force lower than the static limiting frictional force could maintain a body in motion.
xii) The vector definition of moment of a force (M ), is M =F x R
xiii) A practical rigid body does exist.
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