Final answer:
The spokes on a steering wheel are designed to provide structural support to the rim, helping it maintain shape and distribute forces. While aesthetics are secondary and grip is related to the wheel's surface, the decreased mass of wheel rims can improve vehicle acceleration.
Step-by-step explanation:
The purpose of the spokes on a steering wheel is primarily to provide structural support to the rim. These spokes keep the shape of the wheel intact and distribute the forces evenly when the wheel rotates and when the driver exerts pressure by turning the wheel. The increase in mass is incidental and is not the primary function of the spokes. While aesthetics can be a consideration in the design of a steering wheel, it is secondary to functionality. Spokes do not contribute to the grip of the wheel—that is managed by the surface texture and material of the rim.
Understanding the radius and mass of a wheel, including a steering wheel, is important for analyzing forces and motion, such as centripetal force during turns. Reduction in the mass of wheel rims and tires can lead to greater accelerations due to decreased rotational inertia, which is beneficial in racing bikes and vehicles.