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School Physics Quiz : Stability & Moments


Answer the following questions based on stability & moments.

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Multiple choice

Your Performance  

1.

A chalkstick that is balanced upright on a table is in _______ equilibrium.

  neutral

  stable

  unstable

  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.

funnel equilibrium 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
 


 
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