mechanical engineering lara

mechanical engineering lara

A solid sphere whose diameter is 3.5 ft weighs 600 lb. The mass
moment of inertia of the sphere with respect to a horizontal line
through its center of gravity is A. 22.8 slug-fr’. B. 28.5 slug-ff.
C. 36.0 slug-ft 2 . D. 45.6 slug-ft 2 .A solid wheel is being rolled toward the right along a
horizontal surface by a force whose line of action is horizontal.
The diameter of the wheel is 2.5 ft, the wheel weighs 80 lb, and
the magnitude of the force is 15 lb. If the friction force is
sufficient to prevent slipping of the wheel on the supporting
surface, the magnitude of the linear acceleration of the center of
gravity would be A. 3.22 fps per sec. C. 5.15 fps per sec. B. 4.03
fps per sec. D. 6.44 fps per sec.As indicated in Examination Figure 5, a solid cylindrical disk
is caused to rotate about a stationary axis, which passes through
the center of gravity of the disk. The force that produces rotation
is applied to the rim of the disk by means of a cable, which is
wound around the disk and is attached to a body. The radius of the
disk is 2.5 ft, the weight of the disk is 800 lb, and the weight of
the body is 300 lb. When the body is supported in the position
shown, the body and the disk are at rest. If the support tor the
body is taken away, the disk will rotate without friction while the
body moves downward under the action of its weight. The angular
velocity of the disk after the body has moved 5 tt from the
position shown would be A. 3. 70 rad per sec. C. 5.70 rad per sec.
B. 4.70 rad per sec. D. 6.70 rad per sec.Blocks 1 and 2 in Examination Figure 6 are connected by a cable,
which passes over a sheave. Block 1 slides along a horizontal
surface under the action of a horizontal force applied by the cable
when block 2 is permitted to fall vertically through the air. Block
1 weighs 120 lb, block 2 weighs 50 lb, the coefficient of friction
for the materials of block 1 and the supporting surface is 0.3, and
friction in the sheave can be neglected. At the instant at which
the blocks were in the positions shown, the magnitude of the
velocity of each block was 5 fps. After block 2 has moved 3 ft
downward from the position shown, the magnitude of the velocity of
each block would be A. 6.40 fps. C. 7.04 fps. B. 6.75 fps. D. 7.30
fps.The diameter of a solid wheel is 3.5 ft, and its weight is 60
lb. The wheel is rolled toward the left along a horizontal surface
under the action of a horizontal force whose magnitude is 20 lb. If
the friction force is sufficient to prevent slipping, what is the
magnitude of the linear acceleration of the center of gravity of
the wheel? A.. 3.21 fps per sec B. 5.32 tps per sec C. 7.16 fps per
sec D. 8.15 fps per sec

Is this the question you were looking for? If so, place your order here to get started!