An old record player could bring a disk up to its \(45\,\text{RPM}\) speed in less than a second. If the same size disk can also be brought up to a speed of \(75\,\text{RPM}\) in about the same amount of time on another player, compare the torques exerted by each record player.(a) The torques would be the same as the moment of inertia of the two disks is the same. , (b) The torques would be the same because of the conservation of angular momentum. , (c) The torque would be larger in the second case as it requires a greater angular acceleration. , (d) The torque would be larger in the second case as it entails both a larger force and a larger lever arm. :

An old record player could bring a disk up to its \(45\,\text{RPM}\) speed in less than a second. If the **same** size disk can also be brought up to a speed of \(75\,\text{RPM}\) in about the same amount of time on another player, compare the torques exerted by each record player. • Nerd Notes

AP Physics 1

5.6 Newton’s Second Law in Rotational Form

5.4 Rotational Inertia

5.2 Connecting Linear and Rotational Motion

5.1 Rotational Kinematics

BeginnerMCQMathematical32.9k

An old record player could bring a disk up to its \(45\,\text{RPM}\) speed in less than a second. If the same size disk can also be brought up to a speed of \(75\,\text{RPM}\) in about the same amount of time on another player, compare the torques exerted by each record player.

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