Physics
Related Questions
Match the following columns :
Column A Column B (a) Needle (i) class II lever (b) Door knob (ii) inclined plane (c) Ramp (iii) class I lever (d) Lemon crusher (iv) wheel and axle (e) See-saw (v) wedge When is work said to be done by a force ?
What do you understand by a machine?
What is the principle on which a machine works?