Advertisements
Advertisements
Question
The lever for which the mechanical advantage is less than 1 has :
Options
Fulcrum at mid-point between load and effort.
Load between effort and fulcrum.
Effort between fulcrum and load.
Load and effort acting at the same point.
Advertisements
Solution
Effort between fulcrum and load.
Reason:
Levers, for which the mechanical advantage is less than 1, always have the effort arm shorter than the load arm.
APPEARS IN
RELATED QUESTIONS
Draw a diagram of a lever which is always used as a force multiplier. How is the effort arm related to the load arm in such a lever?
Which type of levers have mechanical advantage always more than 1? Give reasons.
Give three examples for leavers of second order.
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?
Nutcracker
Draw a labelled sketch of a second class lever. Give one example of such a lever.
In the following diagram of a wheelbarrow, mark the fulcrum (F) and indicate the directions of load (L) and effort (E) with arrows.
What class of lever is it? Give one more example of the same class of lever.
A crowbar of length 100 cm is used to lift a load of 5 kgf. It has its fulcrum at a distance of 20 cm from the load. Calculate:
(i) the mechanical advantage of a crowbar and,
(ii) the effort applied at the other end.
A lever is used to multiply the force.
