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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.

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

  True

  False

 

2.

If a man pushes a door with a force of 3 N, then the moment he exerts about the hinge 80 cm away is _______.

  2.4 N m

  4.8 N m

  240.0 N m

  480.0 N m

  Half-n-half Clue
 

3.

Two forces acting at right angles, which have the same effect as a single force, are called _______.

  resultants

  constituents

  components

  Half-n-half Clue
 

4.

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)

  cannot be determined.

  will not move.

  will move away from the broken vertex.

  will move towards the broken vertex.

  Half-n-half Clue
 

5.

The center of gravity of a body is the point about which all the clockwise moments equal all the anticlockwise moments.

  True

  False

 

6.

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

  midpoint of the shorter side.

  intersection of its diagonals.

  one of the vertices.

  midpoint of the longer side.

  Half-n-half Clue
 

7.

The moment of a force is inversely proportional to the turning effect of the force.

  True

  False

 


 
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