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प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
A staircase
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उत्तर
A staircase – An inclined plane
संबंधित प्रश्न
State whether the following statement is True or False.
A boy does work while pushing a wall.
State whether the following statement is True or False.
A machine performs work by itself.
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
Define Velocity Ratio
A simple machine enables us to lift a load of 10,000 N by the application of an effort of 500 N. However, when the point of application of the effort moves through 2.5 m, the load gets raised through 10 cm only. What are the values of the:
(i) M.A.
(ii) V.R. and
(iii) Efficiency of the machine?
Classify the following as a lever, a pulley and an inclined plane:
An opener
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the second order.
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the third order.
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
Which machine will you use to do the following work? Write their type.
To cut vegetables.
