Advertisements
Advertisements
Question
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
Advertisements
Solution
The useful work done by an actual machine is always less than the work done on the machine.
APPEARS IN
RELATED QUESTIONS
State whether the following statement is True or False.
A boy does work while pushing a wall.
Answer the following.
What is a machine?
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 .
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.
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.
Can a simple machine act as a force multiplier and a speed multiplier at the same time?
Write an expression for the mechanical advantage of an inclined plane.
What is the efficiency of a machine?
Which machine will you use to do the following work? Write their type.
To cut vegetables.
Rearrange the letters and find out the name of the tool.
R L E V E
| ______ | ______ | ______ | ______ |
