Put wooden block on rough surface board what happen when lift one end of board?

The wooden block will likely slide or fall off the rough surface board when one end of the board is lifted. This is because the rough surface of the board will provide less friction to hold the block in place compared to a smooth surface. The block may also shift or move slightly as the board is lifted, depending on the angle and force of the lift.

Observation:

When one end of the rough surface board is lifted, the wooden block slides down the board.

Reason:

When the board is tilted, the gravitational force acting on the wooden block pulls it down the board. The rough surface provides friction, which opposes the motion of the block. However, the gravitational force is greater than the frictional force, so the block slides down the board.

Factors Affecting the Motion:

- Weight of the block: A heavier block will have a greater gravitational force acting on it, resulting in a faster downward motion.
- Coefficient of friction between the block and the board: A higher coefficient of friction will increase the resistance to motion, causing the block to slide down more slowly.
- Angle of inclination: A steeper angle of inclination will increase the gravitational force component acting down the board, leading to a faster downward motion.
- Surface roughness: A rougher surface will provide more friction, slowing down the motion of the block.