Bennett Mechanical Comprehension Practice Test 2025 - Free Practice Questions and Review Guide

The speed of a rotating object is influenced by several factors, including mass, torque applied, and friction.

When considering mass, it plays a role in how difficult it is to accelerate an object. A greater mass may require more torque to achieve the same angular speed compared to a lighter object.

Torque, which is the rotational equivalent of linear force, directly affects how quickly an object can start rotating or how quickly it can change its speed while rotating. The greater the torque applied, the faster the object will reach a higher rotational speed.

Friction also has a significant impact. It opposes the motion of the rotating object and can slow it down, affecting how quickly it accelerates or maintains its speed.

Taken together, these factors—mass, torque, and friction—contribute to the behavior of a rotating object, which is why the correct answer encompasses all of them. They each influence the rotational dynamics in specific ways that can either enhance or hinder the speed of the object.