Advertisements
Advertisements
Question
Classify the following as a lever, a pulley and an inclined plane:
An opener
Advertisements
Solution
An opener – A lever
RELATED QUESTIONS
A machine is 75% efficient’. What do you understand by this statement?
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.
The correct relationship between the mechanical advantage (M.A.), the velocity ratio (V.R.) and the efficiency (n) is ______.
What is an ideal machine?
Define Velocity Ratio
Give an example where a machine is used to obtain gain in speed.
What is the efficiency of an ideal machine?
Establish a relationship between efficiency, M.A., and V.R.
Which machine will you use to do the following work? Write their type.
To draw water from a well.
Name the levers mentioned in the following passage. Identify the fulcrum, load, and effort of each and say which type of lever it is.
Ravi and Savita sit on a seesaw in a garden. In the meantime, a gardener is trimming trees in the garden. He puts the leaves and other garbage in the wheelbarrow. Later, Ravi gets thirsty and he buys lemon sherbet. The sherbet seller cuts the lemon and squeezes it using a lemon squeezer. He puts small pieces of ice in the glass with the help of the tongs.
