Advertisements
Advertisements
प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
Advertisements
उत्तर
Nutcrackers – A lever
संबंधित प्रश्न
What do you understand by a machine?
Can a machine have an efficiency of 100%? Give a reason to support your answer.
A machine is 75% efficient’. What do you understand by this statement?
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
The diagram below shows a wheel barrow. Mark position of fulcrum F and draw arrows to show the directions of load L and effort E. What class of lever is the whell barrow? Give one more example of the same class of lever.
Give an example of the following uses of a machine:
to obtain gain in speed
Can a simple machine act as a force multiplier and a speed multiplier at the same time?
Comment on the statement ‘The mechanical advantage of a machine is greater than 1’. Give an example of a lever mechanical advantage is:
(i) greater than 1.
(ii) Equal to 1.
What is the relationship between the mechanical advantage and the velocity ratio for:
(i) An ideal machine,
(ii) A practical machine.
A pair of scissors is a _____ multiplier.
