Blog

A student compares mitosis and meiosis. Which distinction correctly differentiates the two processes?

Biological evolution differs from chemical evolution in that biological evolution is possible only after the development of

What item do nurses often use to check a patient’s heartbeat?

What do nurses primarily do?

Long Question B (Total 20 Points) (Course Outcome 5 – Rigid Body Kinetics) Consider the Disc-Block system joined together with a massless and rigid bar of length l on top of a rough incline of. The mass of the disc is 3M and it has a radius of R. The mass of the block is M. it’s moment of inertia is and the height and width of the block are h and w respectively. There is a spring of stiffness k attached to the bottom of the incline. The disc is rolling without slip while the block slips down the incline. The system starts at rest and a distance of D (measure along the incline) from the spring and the system’s motion can be broken down into two phases. Phase 1 is before the block makes contact with the spring. Phase 2 is after the block makes contact with the spring with the spring being at a height of L from the center of mass of the block. You are asked to find the equation of motion of the system.  Answer all the questions below. Write down your work and submit it accordingly for partial credit.

Long Question B: Subpart What would be the roll without slip condition for the disc?

Long Question B: Subpart The sum of moments equation for the block (assuming the block does not tip or rotate) is – [fs]*[fs_arm]

A person walks radially inwards on a platform that is rotating counterclockwise about its center with a constant angular velocity

Two uniform solid cylinders, and , have the same mass but different radii as shown in the diagram below. Each cylinder is accelerated from rest with forces and applied as shown. For the cylinders to have identical angular accelerations, what is the relationship between and ? The mass moments of inertia of the two cylinders about their centers are and .

Provide a specific example for how Apple implements each of the 4 P’s.