Teaching RPSC School Lecturer Mock Test Series 2024 Physics Laws of Motion Common forces in mechanics
Which set of items correctly represents applications where increased friction is desirable?
1
Oil on floor, ice on roads, smooth tires
2
Spiked shoes, treaded tires, grooved shoe soles
3
Slippery surfaces, greased bearings, polished floors
4
Waxed skis, oiled machinery, air-cushioned bearings
5
Question Not Attempted