تم الحل ✓
categoryفيزياء
schoolبكالوريوس
event_available2026-07-13
السؤال
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HRW-Q25
In figure below, what magnitude of (constant)
force applied horizontally at the axle of the
wheel is necessary to raise the wheel over an
obstacle of height h = 3.00 cm?
The wheel's radius is r = 6.00 cm, and its mass
is m = 0.800 kg.
No force from the floor because we consider
the wheel is about the leave the floor:
To
mg
F
Fnetx = 0
F-f=0
Fnet.y
Tnet =0
= 0
fmg 7.84N
Ans: 13.6N
-(r-h)(F) + (x)(mg) = 0.
r-h
LA
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✓CHECKI
CHECKPOINT 3
A horizontal uniform bar of weight 10 N is to hang from a
ceiling by two wires that exert upward forces F and F on the bar. The figure shows four
arrangements for the wires. Which arrangements, if any, are indeterminate (so that we
cannot solve for numerical values of F and F)?
F
Fd
(a)
10 N
(b)
VION
d
VION
VION
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