ME 012: Engineering Dynamics | HW #8 | Dr. J. M. Meyers
Problem 1
The slender rods have weight density
3 lb/ft (mass per length not per
volume!). Determine the moment of inertia of the assembly about an axis
2 ft and
perpendicular to the page and passing through the pin at .Assume
1.5 ft.
ME 012: Engineering Dynamics | HW #8 | Dr. J. M. Meyers
Problem 2
Block has weight of 50 lb and the platform
determine the normal force exerted by block
pulleys and bars of the triangular frame.
has weight 10 lb. If
100 lb,
on . Neglect the weight of the
ME 012: Engineering Dynamics | HW #8 | Dr. J. M. Meyers
Problem 3
The wheel of mass
10 kg has a radius of gyration of
200 mm. If the
wheel is subjected to a moment M
5 N⋅m, where is in seconds, determine
its angular velocity when
3 s starting from rest. Also, compute the reactions
which the fixed pin exerts on the wheel during the motion.
ME 012: Engineering Dynamics | HW #8 | Dr. J. M. Meyers
Problem 4
The lawn roller has a mass of 80 kg and a radius of gyration
0.175 m. If it is
pushed forward with a force of 200 N when the handle is at
45°, determine
its angular acceleration. The coefficients of static and kinetic friction between the
ground and the roller are
0.12 and
0.1, respectively. The radius of the
roller is
200 mm.