Advertisements
Advertisements
प्रश्न
In a lever, the fulcrum is at one end at a distance of 30 cm from the load and effort is at the other end at a distance of 90 cm from the load. Find :
(a) the length of load arm,
(b) the length of effort arm, and
(c) the mechanical advantage of the lever.
Advertisements
उत्तर
Given,
(a) Load arm = 30 cm
(b) Effort arm = (90 + 30) cm = 120 cm
(c) Mechanical advantage = `"Effort arm"/"Load arm"`
= `"120 cm"/"30 cm"`
= 4
APPEARS IN
संबंधित प्रश्न
Describe three orders of levers giving an example of each. Draw neat diagrams showing the positions of fulcrum, load, and effort in each kind of lever.
Which class of lever has the mechanical advantage always more than 1? Give an example.
Name the class to which the following lever belong:
an oar rowing a boat.
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a see-saw.
Tick the most appropriate answer.
A pair of scissors is an example of a/an
Answer the following in a word or two or in a sentence.
Given an example of a Class I lever.
Which type of lever has a mechanical advantage always more than one? Give one example. What change can be made in this lever to increase its mechanical advantage?
Classify the following into levers:
A catapult
Lemon juicer belongs to which type of lever? Why?
A ______ lever will always have M.A. > 1.
