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प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
The wheel of a flagpole
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उत्तर
The wheel of a flagpole – A pulley
संबंधित प्रश्न
A machine is 75% efficient’. What do you understand by this statement?
A crowbar of length 120 cm has its fulcrum situated at a distance of 20 cm from the load. Calculate the mechanical advantage of the crowbar.
Define Efficiency
What is the efficiency of an ideal machine?
Give an example of the following use of a machine to change the direction of force.
Establish a relationship between efficiency, M.A., and V.R.
A uniform metre scale is kept in equilibrium when supported at the 60 cm mark and a mass M is suspended from the 90 cm mark as shown in the figure. State with reasons, whether the weight of the scale is greater than, less than or equal to the weight of mass M.
Which machine will you use to do the following work? Write their type.
To cut vegetables.
Which machine will you use to do the following work? Write their type.
To draw water from a well.
Simple machines usually exchange a larger force to move a heavy object.
