1 / 6

ENGR 215 ~ Dynamics Section 18

ENGR 215 ~ Dynamics Section 18. Lecture Example 1 : At the instant shown, link AB has angular velocity ω AB = 2 rad/sec. If each link is considered as a uniform slender bar with weight density of 0.5 lb/in, determine the total kinetic energy of the system.

roana
Download Presentation

ENGR 215 ~ Dynamics Section 18

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ENGR 215 ~ Dynamics Section 18

  2. Lecture Example 1: At the instant shown, link AB has angular velocity ωAB = 2 rad/sec. If each link is considered as a uniform slender bar with weight density of 0.5 lb/in, determine the total kinetic energy of the system.

  3. Lecture Example 2: A yo-yo has weight of 0.3 lb and radius of gyration kO=0.06 ft. If it is released from rest, determine how far it must descend in order to attain angular velocity ω = 70 rad/sec. Neglect the mass of the string and assume that the string is wound around the central peg such that the mean radius at which it unravels is r = 0.02 ft.

  4. Lecture Example 3: A ball of mass m and radius r is cast onto the horizontal surface such that it rolls without slipping. Determine the minimum speed vG of its mass center G so that it rolls completely around the loop of radius R + r without leaving the track.

  5. Lecture Example 4: The compound disk pulley consists of a hub and attached outer rim. If it has mass, mdisk=3kgand radius of gyration kG=45mm determine the speed of block A after A descends distance 0.2mfrom rest. Blocks A and B each have a mass mb=2kg. Neglect the mass of the cords.

  6. Lecture Example 5: The assembly consists of two 3 ft. bars of weight 8 lb.which are pin connected to the two disks with a radius of 0.5 ft. and a weight of 10 lb. If the bars are released from rest at  = 60, determine their angular velocities at the instant  = 0. Assume the disks roll without slipping.

More Related