Photo AI
The 3D graphic on the right shows a camshaft and roller follower from a lawnmower - Leaving Cert DCG - Question C-4 - 2011
Question C-4
The 3D graphic on the right shows a camshaft and roller follower from a lawnmower. Details of a similar cam and follower are given below. The camshaft diameter is ... show full transcript
Worked Solution & Example Answer:The 3D graphic on the right shows a camshaft and roller follower from a lawnmower - Leaving Cert DCG - Question C-4 - 2011
Step 1
Draw the rectangular block B and circular roller L, positioned on the ground as shown.
Answer
To draw the rectangular block B and the circular roller L:
- Start with Block B: Draw a rectangle to represent block B, maintaining the specified dimensions from the question.
- Add Roller L: Draw a circle below the block to represent roller L, ensuring it is tangent to the ground.
- Positioning: Make sure the rectangle (block B) is above the circle (roller L) and the dimensions are clearly labeled.
Step 2
Draw the locus of P for this movement.
Answer
To draw the locus of point P:
- Identify Point P: Mark point P on the circumference of roller L where it touches the ground.
- Roller Movement: As roller L rolls, mark the circular path traced by point P.
- Divide Circle: Indicate divisions corresponding to the ground movement, ensuring the trace respects the rolling motion, assessing a horizontal distance from the position where roller L is positioned originally.
Step 3
Show the block B in its final position after this rolling.
Answer
To illustrate the final position of block B:
- Block Movement: Shift block B horizontally in the direction of rolling, ensuring that it stays above the locus drawn for point P.
- Final Location: Draw the rectangle (block B) at its new position after the rolling process is complete, ensuring to maintain orientation relative to roller L.
- Label Clearly: Indicate this position distinctly and clearly for readability.