Why is it necessary to take care of the machines? Give some ways to maintain the machines.
There are some ways in which we can maintain our machines for a longer period of time.
Give reasons why :
(a) Travelling bags have wheels.
(b) Iron pipes are fitted on an inclined plane for pushing up heavy loads.
(c) We should take care of machines.
(d) We should use a pulley to draw water from a well.
Why is it important to take care of machines? Mention some of the methods used to take care of machines?
Write the ways to take care of the machines.