A couple consists of a force P acting at a point A whose coordinates are (-1,2,4) m and force - F acting at a point whose coordinates are (2,3, -2)m. If F = 3i + 2j - 4k in kg units the moment of the couple in kg - m units would be

Related MCQs

• A force F = 2i + 3j - k is passing through the origin. Its moment about point (1, 1, 0) is
• A force F = 2i + 3j - k is passing through the origin. Its moment about point (1, 1, 0) is
• The statement ---- if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two ---- is known as
• The polar moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter of 6 cm will be
• The moment of inertia of a hollow circular section whose external diameter is 8 cm and interial diameter is 6 cm about the axis passing through its centre is
• A locomotive of weight 100 tonnes is attached to train of wagons weighing 1000 tonnes. The locomotive pulls the wagons with a constant velocity of 36 km/hour. When the coupling between the train and wagons breaks, the wagons roll on 95 m in 10 sec. The distance between the locomotive and the wagons at this instant assuming that the forces acting on the train are unaltered would be
• The units of moment of inertia of an area are
• The units of moment of inertia are
• In case of cantilever, irrespective of the type of loading the maximum bendry moment and maximum shear force occur at
• An electric motor drives a windless which hauls up a crate A of weight W = 500 kg up an inclined plane through a height of 10 m in 2 minutes. The torque acting on the windless is 25 kgm and the drum of the windless makes 30 rpm. The efficiency of the inclined plane would be