1. If a walking stick with a mass of 300 g can be balanced by placing a mass M of 180 g at a distance L of 20 cm from the fulcrum, then the center of gravity of the stick is _______ cm away from the fulcrum.   12   6   60   60   Hint Half-n-half Clue   2. The center of gravity of a body is the point about which all the clockwise moments equal all the anticlockwise moments.   True   False   3. If a man pushes a door with a force of 6 N, then the moment he exerts about the hinge 90 cm away is _______.   5.4 N m   10.8 N m   540.0 N m   1080.0 N m   Half-n-half Clue   4. A funnel that is balanced upright on a table on its narrow tip is in _______ equilibrium.   unstable   stable   neutral   Half-n-half Clue   5. There are fundamentally _______ kinds of equilibrium.   four   two   three   Half-n-half Clue   6. The _______ of a force is the product of the force and the shortest distance from a point to the line of action of the force.   momentum   moment   stability   Half-n-half Clue   7. The resultant of two forces acting at a point can be determined by using the 'Parallelogram of Forces'.   True   False