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प्रश्न
Give an example of the following use of a machine to change the direction of force.
उत्तर
Lifting a bucket full of water from the well using a single fixed pulley.
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संबंधित प्रश्न
What is the principle on which a machine works?
A machine is 75% efficient’. What do you understand by this statement?
What care would you take to increase the life span of a machine which you use?
Give scientific reason for the following:
Passengers in a bus are pushed backward when it starts suddenly.
Define Efficiency
Give an example of the following use of a machine to change the point of application of the force.
Establish a relationship between efficiency, M.A., and V.R.
(i) Calculate the mechanical advantage of the lever shown in the figure.
(ii) How do you define the mechanical advantage of a machine?
Classify the following as a lever, a pulley and an inclined plane:
A staircase
Simple machines usually exchange a larger force to move a heavy object.
