Engineering Mechanics - Planar Kinematics of a Rigid Body (PKRB)
- Planar Kinematics of a Rigid Body (PKRB) - General Questions
The disk rolls without slipping such that it has an angular acceleration of 
= 4 rad/s2 and angular velocity of 
= 2 rad/s at the instant shown. Determine the accelerations of points A and B on the link and the link's angular acceleration at this instant. Assume point A lies on the periphery of the disk, 150 mm from C.
Knowing the angular velocity of link CD is CD = 4 rad/s, determine the angular velocities of links BC and AB at the instant shown.
AB = 4.00 rad/s TBC = 1.200 rad/sAB = 2.65 rad/s TBC = 1.985 rad/sAB = 4.00 rad/s TBC = 1.200 rad/sAB = 1.600 rad/s TBC = 2.29 rad/s
The safe is transported on a platform which rests on rollers, each having a radius r. If the rollers do not slip, determine their angular velocity if the safe moves forward with a velocity v.
= v/(2r) = v/r = 3v/r = 2v/r
The oil pumping unit consists of a walking beam AB, connecting rod BC, and crank CD. If the crank rotates at a constant rate of 6 rad/s, determine the speed of the rod hanger H at the instant shown.
Rod CD presses against AB, giving it an angular velocity. If the angular velocity of AB is maintained at = 5 rad/s, determine the required speed v of CD for any angle 
of rod AB.