Numerical Problems: i
b.
A crowbar having the length of 1.75 m is used to balance a load of 500 N. If the
distance between the fulcrum and the load is 0.5 m, calculate: [Friction is neglected]
effort applied to balance the load ii. MA iii. VR iv. efficiency
A load of 400 N is lifted by a first class liver in which the load is at the
distance of 20 cm and the effort is at the distance of 60 cm from the
fulcrum. If 150 N effort is required to lift the load, what is its efficiency?
in a lever, a load of 600 N is lifted by using 400 N effort. If the load is at the
distance of 20 cm and the effort at the distance of 40 cm from the fulcrum,
calculate its efficiency.
Study the given diagram and calculate the following:
ii. work done by effort
iv. V. R.
C
d.
i work done by load
iii. M. A
130 cm
15 cm
E
V. efficiency (Friction is neglected]
Aload of 600 N is lifted using a first class lever
applying an effort of 350 N. If the distance
between the fulcrum and the effort is 60 cm and
the distance between the load and the fulcrum is
30 cm, calculate its efficiency.
Study the diagram and calculate the effort required
to balance the load.
600 N
f.
(2.8m
nswers
0.6 m​