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प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
An axe
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उत्तर
An axe – A wedge
संबंधित प्रश्न
State whether the following statement is True or False.
A machine performs work by itself.
Why is a machine not 100% efficient?
State the kind of lever which always has mechanical advantage less than 1. Draw a labelled diagram of such a lever.
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.
Write the relation between mechanical advantage, velocity ratio and efficiency.
Define Velocity Ratio
Define Efficiency
How does a machine work?
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.
What is a lever?
