Advertisements
Advertisements
प्रश्न
Write down a relation expressing the mechanical advantage of a lever.
Advertisements
उत्तर
M.A. of a lever =`"Load"/"Effort"="Effort arm"/ "Load arm"`
This is the expression of the mechanical advantage of a lever.
APPEARS IN
संबंधित प्रश्न
The diagram below shows a lever in use:
- To which class of levers does it belong?
- Without changing the dimensions of the lever, if the load is shifted towards the fulcrum what happens to the mechanical advantage of the lever?
A man uses a crowbar of length 1.5 m to raise a load of 75 kgf by putting a sharp edge below the bar at a distance 1 m from his hand.
- Draw a diagram of the arrangement showing the fulcrum (F), load (L) and effort (E) with their directions.
- State the kind of lever.
- Calculate:
- load arm,
- effort arm,
- mechanical advantage and
- the effort needed.
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?
The Physical balance
The following belong to which class of lever?
A claw-hammer
The following belong to which class of lever?
Rowing of a boat
The following belong to which class of lever?
A pair of scissors
What is a lever?
State the types (or kinds) of lever, and give two examples of each kind.
A lever is used to multiply the force.
