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A set of two identical disks, each uniform in composition, are attached to each other as shown above and rotate together as a rigid object around an axis located at the point of contact, as indicated above. The radius of each disk is R, the mass of each disk is M and the inertia of a disk around an axis through its center and perpendicular to the disk is I = MR2/2. What is the rotational inertia of the rigid object formed by these two disks around the indicated axis of rotation?

The rotor within a generator has a moment of inertia of 400 kg m2 and is rotating at 20 rad/s. The rotor is brought to rest over 20 seconds, at a constant angular acceleration. What is the magnitude of the torque being applied to the rotor over this interval?

The unit kg·m2·s-1  (or, equivalently, kg·m2/s) can be used for:

A 200 kg “four-wheeler” is rolling horizontally at 1 m/s. You would like to stop the vehicle by shooting a 2 kg bouncy rubber ball at it, also horizontally. About how fast should you shoot the ball?

Pilots are now trained to follow Traffic Collision Avoidance System (TCAS) instructions even if they conflict with instructions from an air traffic controller.

Professional ethics does not differ from ethics in general.

Stakeholders in the development of ethical guidelines for software developers are

The cause of failure in a computer program is often due to more than one factor.

Give one ethical issue associated with state sponsored cyber attacks.

The Air France flight 447 crashed because the software was developed by outsourcing.