1. A chalkstick that is balanced upright on a table is in _______ equilibrium.   neutral   stable   unstable   Hint Half-n-half Clue   2. If a man pushes a door with a force of 5 N, then the moment he exerts about the hinge 80 cm away is _______.   4.0 N m   8.0 N m   400.0 N m   800.0 N m   Half-n-half Clue   3. Three forces in equilibrium acting at a point can be represented in magnitude and direction by the sides of a triangle taken in order.   True   False   4. An inverted funnel placed on a table is in _______ equilibrium.   unstable   stable   neutral   Half-n-half Clue   5. A force of 3 N acts on a small body pushing it vertically upwards. Simultaneously, another force of 7 N acts on it pushing it vertically downwards. The resultant of the two forces is _______.   4 N downwards   4 N upwards   10 N downwards   10 N upwards   Half-n-half Clue   6. There are fundamentally _______ kinds of equilibrium.   three   four   two   Half-n-half Clue   7. The center of gravity of a thin rectangular metal plate is at the   one of the vertices.   midpoint of the longer side.   midpoint of the shorter side.   intersection of its diagonals.   Half-n-half Clue