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प्रश्न
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the second order.
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उत्तर
The load in the centre, the fulcrum on one side and the effort on the other side make a lever of the second order.
संबंधित प्रश्न
What is the purpose of a jack in lifting a car by it?
show a nut cracker In the diagram, mark the position of the fulcrum F and the line of action of load L and effort E .
State whether the mechanical advantage of an inclined plane is equal to 1, less than 2 or greater than 1?
Fig show a system of four pulleys. The upper two pulleys are fixed and the lower two are movable.
(i) Draw a string around the pulleys. Also show the place and direction in which the effort is applied.
(ii) What is the velocity ratio of the system?
(iii) What is the mechanical advantage of the system?
(iv) What assumption do you make in arriving at your answer in part (iii)?
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:
The wheel of a flagpole
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
Which machine will you use to do the following work? Write their type.
To remove the lid of a tin.
______ help us to make work easier.
Name some simple machines.
