Question

rolling friction is__________ than static friction.
2.... undesirable_________and__________ are produced due to friction.
3...... the force of friction due fluids is called___________.
4....... Friction can be increased by making the surfaces in contact__________.
State true or false :-
1....the use of lubricants makes the surface rough.
2 .... Soles of shoes wear out due to friction between the Soles and the feet
3....... Ball bearings ate used to increase friction.
4.... Fish have a sreamlined shape.

Answer 1

FILL UPS::::

1)rolling friction is__________ than static friction.
❄Smaller❄

2)undesirable_________and__________ are produced due to friction.
❄heat,light❄

3)the force of friction due to fluids is called___________.
❄drag❄

4)Friction can be increased by making the surfaces in contact__________.
❄force❄

TRUE OR FALSE:::

1)The use of lubricants makes the surface rough.
❄False❄

2)Soles of shoes wear out due to friction. between the Soles and the feet.
❄False❄

3)Ball bearings ate used to increase friction.
❄True❄

4)Fish have a sreamlined shape.
❄True❄