Revision for Past Topics (Mass,Weight,Density , Turning Effects

The diagram shows a uniform beam with a 2 kg load on it.

What is the moment about the pivot due to the weight of the load?

• 0.4 Nm

• 4 Nm

• 10 Nm

• 100 Nm

The diagram shows a 2 kg uniform beam with a length of 1 m.

At which position should a 4 kg mass be hung along the beam to balance the beam?

• 12.5 cm left of the pivot

• 12.5 cm right of the pivot

• 25 cm left of the pivot

• 25 cm right of the pivot

Which of the following containers is the most stable?

• 
• 
• 
• 

An irregular object is placed on a pivot.

A weight needs to be placed on the object before it is balanced on the pivot.

Which of the following points is a possible centre of gravity of the object?

• A

• B

• C

• D

The diagram shows an object in equilibrium.

Which of the following statements explains how the object can be equilibrium?

• The centre of gravity of the object is low enough to allow the object to be stable.

• The weight of the object produces an anticlockwise moment that is not large enough to tilt the object.

• The weight of the object produces a clockwise moment that is not large enough to tilt the object.

• The weight of the object produces no moment.