Advertisements
Advertisements
प्रश्न
(i) Calculate the mechanical advantage of the lever shown in the figure.
(ii) How do you define the mechanical advantage of a machine?
उत्तर
(i) Clockwise moment = b × L; and Anti-clockwise moment = a × E
∴ Clockwise moment = Anti-clockwise moment
∴ b × L = a × E
or `"L"/"E"="a"/"b"`
(ii) Mechanical advantage is the ratio of the load lifted to the effort applied.
M.A. = `"L"/"E"="a"/"b"`
APPEARS IN
संबंधित प्रश्न
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
Define Simple machine
Define Efficiency
Write an expression for the mechanical advantage of an inclined plane.
Give an example of the following use of a machine to change the point of application of the force.
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the first order.
Which machine will you use to do the following work? Write their type.
To cut vegetables.
Why is this so traveller’s bags have wheels?
A pair of scissors is a _____ multiplier.
