Question

Give Reason:
1.A rolling ball stops after moving some distance
2.What kind of friction comes into play:
(a) When a block of wood kept on table moves slowly.
(b) When a block of wood kept on table just tends to move (or slip)
(c) When a block of wood kept on cylindrical iron rods moves.

Answer 1

1) When a ball is rolled frictional force becomes active and begins opposing the movement or motion of the ball thus resulting in a decreased velocity. With velocity gradually becoming minimal, the ball stops after rolling for a distance.

2a) Sliding friction

2b) Static friction

2c) Rolling friction

Answer 2

Heya@ use

Here is the answer

✴Rolling ball stops after some distance because the force of friction opposes its movement and tends it to stop.
✴(a)sliding friction
(b)static friction
(c)Rolling friction

hope it helps to you.

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