Advertisements
Advertisements
प्रश्न
Class II levers are designed to have ______.
पर्याय
M.A. = V.R.
M.A. > V.R.
M.A. > 1
M.A. < 1
उत्तर
Class II levers are designed to have M.A. > 1.
Reason:
In class II levers, the load is in between the effort and fulcrum. Thus, the effort arm is always longer than the load arm and less effort is needed to overcome a large load. Hence, M.A > 1
APPEARS IN
संबंधित प्रश्न
Which type of levers have mechanical advantage always more than 1? Give reasons.
Give three examples for leavers of the third order.
Which class of lever found in the human body is being used by a boy when he raises the weight of his body on his toes?
The following belong to which class of lever?
Human-arm
The following belong to which class of lever?
Pliers Tools
The following belong to which class of lever?
A pair of scissors
The following belong to which class of lever?
Wheelbarrow
Shears, used for cutting metals and scissors used for cutting clothes are both examples of levers of the first order. However, whereas the shears always have short blades and long handles, the scissors often have blades much longer than the handles. Explain, why this is so?
What is a lever?
The length of a nut-cracker is 12 cm. A nut, when kept at a distance of 4 cm from its fulcrum, requires an effort of 100 gf to crack it. What force will be required to crack the nut without using the nut-cracker?