Final answer:
The speed of the cam in relation to the crankshaft depends on the gear ratio and the relative sizes of the cam and the crankshaft.
Step-by-step explanation:
The speed at which the cam turns in relation to the crankshaft depends on the design of the mechanism. The cam can turn faster or slower than the crankshaft, depending on the gear ratio and the size of the cam compared to the crankshaft.
For example, if the cam has a larger diameter than the crankshaft, it will turn slower. Conversely, if the cam has a smaller diameter, it will turn faster.
In summary, the speed of the cam in relation to the crankshaft is determined by the gear ratio and the relative sizes of the cam and the crankshaft.