Question

State three ways in which machines are useful to us?

Answer 1

Answer:

machines are useful to us in many ways:-

) A machine can be used to obtain a gain in speed.

(ii) A machine can be used to lift a load in one direction by applying an effort in a convenient direction.

(iii) A machine can be used to lift a heavy load by applying a less effort.

(iv) A machine can be used to overcome a load at some point by applying an effort at a convenient point.

IN THIS WAYS MACHINES HAVE MADE OUR LIFE EASY.

Answer 2

Answer:

machines are objects that are constructed for and by the humans .

1. they reduce the work load on humans .
2. there are certain MACHINES that perform all the tasks of a human being and hence machines can replace humans for ease of work.
3. machines do the work by allowing us to apply less amount of force in the same time interval