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and its weight is 
. The beam is supported on a pivot 
from end P. A load of weight 
is hung from end P and the beam is in equilibrium.
is pivoted at the 
mark. A 
load is suspended from one end, causing the rule to rotate about the pivot.
at a distance of 
from one end of the bar. Support Y exerts a vertical force 
at the other end of the bar. The bar is in equilibrium. What is the ratio 
?
mark, as shown.
mass is hung from the 
mark. What is the mass of the metre rule?
is shown in the figure below.
and is made of wood of density 
. Calculate the cross-sectional area 
, in 
, of the rod.
in the string is in a direction perpendicular to the rod. The rod is in equilibrium and inclined at an angle of 
to the vertical.
.
ruler on a fulcrum set at the 
mark. She then places a 
mass on the 
mark and a 
mass on the 
mark, as shown.
mark to restore the balance?
and weight 
is placed on a horizontal table, with the greater part of its length overhanging the edge of the table. The edge of the table acts as a pivot. The centre of gravity of the box is at its geometric centre. To balance the box, a uniform sphere of diameter 
is placed inside the box, touching one end, as shown.
and weight 
. A block of weight 
rests on the beam at a distance of 
from end B. The wire is attached to the beam at point D which is a distance of 
from end B. The wire exerts a force on the beam of 
at an angle of 
to the horizontal. The beam is in equilibrium.
to the horizontal and exerts a tension force 
on the boom. The weight of the boom is 
. The mass of the boom is uniformly distributed along its length. The boom is in equilibrium. What is the magnitude of T?
. The rod is suspended from a fixed point P by a string attached to end X. An object of mass 
is suspended by a string that is attached to the rod at a distance of 
from end X, as shown.
is pivoted at P as shown. Weights of 
and 
are attached to its ends. The length of the beam is marked off at 
intervals. At which point should a further weight of 
to the horizontal. What is the tension in the rope with which we opened the hatch?
to the horizontal. The distance between the wheels of the tractor is 150 cm. How high can the tractor's centre of gravity be to prevent it from tipping over?
