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School Physics Quiz : Stability & Moments


Answer the following questions based on stability & moments.

Formats Info Page Quiz Review
Multiple choice

Your Performance  

1.

If a walking stick with a mass of 300 g can be balanced by placing a mass M of 120 g at a distance L of 30 cm from the fulcrum, then the center of gravity of the stick is _______ cm away from the fulcrum.

  40

  90

  12

  4

  Half-n-half Clue
 

2.

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

  stable

  neutral

  unstable

  Half-n-half Clue
 

3.

An object with a high center of gravity is more stable than an object with a low center of gravity.

  True

  False

 

4.

The center of gravity of a thin rectangular metal plate is at the

  midpoint of the shorter side.

  midpoint of the longer side.

  one of the vertices.

  intersection of its diagonals.

  Half-n-half Clue
 

5.

Consider a thin rectangular plastic sheet. If a small piece of the plastic breaks off at one of the vertices, then the center of gravity of the remaining plastic (with respect to the original center of gravity)

  will move towards the broken vertex.

  cannot be determined.

  will move away from the broken vertex.

  will not move.

  Half-n-half Clue
 

6.

funnel equilibrium A funnel that is balanced upright on a table on its narrow tip is in _______ equilibrium.

  neutral

  stable

  unstable

  Half-n-half Clue
 

7.

If a man pushes a door with a force of 6 N, then the moment he exerts about the hinge 80 cm away is _______.

  4.8 N m

  9.6 N m

  480.0 N m

  960.0 N m

  Half-n-half Clue
 

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