If α = 1 is true, then τ = I * 1 is true. Define the fundamental law of rotational motion.
Torque can be seen in the opening of a bottle cap or the turning of a steering wheel. A counterclockwise rotation causes the torque to point upward, and vice versa. The vector product of the vector pointing from the axis to the point of application of force applied and the vector of force is identical. The torque is, in fact, a vector quantity. Is Torque a Quantity with a Vector? (2 marks)Īns. As a result, when the body is given torque, it begins to rotate with uniform angular acceleration. It is a crucial criterion for maintaining rotational motion in the body. In a linear motion, the torque is similar to the applied force. What is the Difference Between Torque and Moment of Inertia? (2 marks)Īns. Sample questions based on Relation between Moment of Inertia and Torque The above equation is called the fundamental law of rotational motion, or the law of rotational motion. Similarly, Torque should be substituted for Force Fīy substituting eq (2) and (3) in (1) we get: \(\alpha = \frac )\)Ī = r α is the angular acceleration- (2) We know from Newton's Second Law of Motion that, Every rigid body executing rotational motion along a fixed axis bears a uniform angular acceleration motion, i.e., under the action of torque or the moment of force, according to rotational motion mechanics.Ĭonsider an entity in rotatory motion with mass m traveling along an arc of a circle with radius r. So, by utilizing Newton's first law of motion, we may comprehend the link between torque and inertia.