Torque
The unit of torque
What is N•m?
This is the formula for angular momentum.
What is L = Iw?
This is the formula for Rotational KE
What is 1/2 Iw2?
Rotational inertia is the rotational analog for this linear concept.
What is mass?
The positive direction for rotational motion.
This is the method to determine the direction of the torque vector
What is the Right Hand Rule?
The unit of angular momentum is this.
What is kg•m2/s?
A hollow sphere and a solid sphere of the same mass roll down a hill. The sphere with the greater rotational KE is this.
What is the hollow sphere?
The value of the moment of inertia for a point mass of 10 kg rotating at at distance of 2 meters.
What is 40 kg•m2/s?
This is the term for a member in a truss that does not have an actual effect on the support of the system.
What is a zero force member?
A force of 50 N applied at a distance of 10 meters gives this value.
What is 500 N•m?
What is 2 kg•m2/s?
This term in the total Kinetic Energy formula can be replaced with the formula v/r.
What is w (angular velocity)?
This is the moment of inertia for a solid sphere
What is 2/5 mr2?
What is increase their radius?
A rod that can pivot at its end has a length of 10 meters. A mass of 90 kg is hung from the end. This is the torque.
What is 8,829 N•m?
If no external torque is applied the net change of angular momentum is equal to this value.
What is zero?
These two different objects would have identical rotational KE and linear KE values, given the same mass and radius.
What are point masses and thin hoops about the axis?
The mass of a solid sphere with a rotational inertia of 100 kg•m2/s and a radius of 0.5 m.
What is 1,000 kg?
The center of mass for a system is a type of average called this.
What is a weighted average?
An object with a moment of inertia of 24 kg•m2 accelerates at a rate of 10 rad/s2. This is the torque.
What is 240 N•m?
The mass of a point mass rotating about a central axis point 1.5 meter away with an angular velocity of 10 rad/s and an angular momentum of 25 kg•m2/s.
What is 11.11 kg?
The total KE of a solid sphere with a mass of 10 kg and a radius of 2 meters that rolls down a hill with a height of 10 meters.
What is 981 J?
For the same mass and radius/length, this object would have the smallest moment of inertia.
What is a thin rod about perpendicular axis through center?
A hollow sphere with a mass of 10 kg rolls from a height of 2 meters up. If it has a radius of 0.5 meters, its angular velocity is this.
What is 9.70 rad/s?