Question

(
Heat can be produced by:
(a) Sliding
(b) Friction
(c) Force
(d) Pressure
(ii) if we apply oil on door hinges, the frietion will:
(a) Increase
um Decrease (c) Disappear altogether (d) Remain unchanged
( When the applied force is thrice on an object and the object is still at rest, then friction becomes
(a) Doubled
(b) Halved
(c) Quadrupled At Thrice​

Answer 1

Answer:

1. b

2. c

3. 2

Explanation:

ok hope it help