Question

1. Ballbearings works under the principle of________friction.
a) Sliding
b) Static
c) Rolling
d) Fluid

2. Force exerted by gravitation pull of earth is _______
a) Weight
b) Electro static
c) Magnetic
d) None of the above

3. Strongest of all fibres is_______
a) Rayon
b) Nylon
c) Acrylic
d) None of the above​

Answer 1

Explanation:

1. Rolling friction

2.None

3.Rayon

hope help you!?

Answer 2

Answer:

1 c) rolling

2 a) weight

3 b) nylon