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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.

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

  True

  False

 

2.

The SI unit of moment is

  N/m

  N/m2

  N m

  Half-n-half Clue
 

3.

A pendulum at rest is in _______ equilibrium.

  stable

  neutral

  unstable

  Half-n-half Clue
 

4.

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

  components

  resultants

  constituents

  Half-n-half Clue
 

5.

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

  True

  False

 

6.

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 20 cm from the fulcrum, then the center of gravity of the stick is _______ cm away from the fulcrum.

  8

  60

  4

  40

  Half-n-half Clue
 

7.

A mass of 70 g is attached at one end of a rod, and a mass of 30 g is attached at the other end. If the length of the rod is  60 cm, then the fulcrum should be placed _______ cm away from the 70 g mass for the rod to balance.

  24

  42

  36

  18

  Half-n-half Clue
 


 
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