You have your bicycle upside-down for repairs. The front wheel is free to rotate and is perfectly balanced except for the 34 g valve stem.
1.If the valve stem is 34 cm from the rotation axis and is located 24 ∘ below the horizontal, what is the resulting torque about the wheel's axis?
torque will be due to the vertical component of force
Torque = F*r
= 0.034*9.8*sin 24 * 0.34
= 0.046 N-m
so the resulting torque about the whell's axis is 0.046 N-m
You have your bicycle upside-down for repairs. The front wheel is free to rotate and is...
- 8. QC A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially. She measures the heights reached by drops mov- ing vertically (Fig. P7.8). A drop that breaks loose from the tire on one turn rises vertically 54.0 cm above the tangent point. A drop that breaks loose on the next turn rises 51.0 cm above the tangent Figure P7.8 Problems...
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8. QIC A bicycle is turned upside I--- down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially. She measures the heights reached by drops mov- ing vertically (Fig. P7.8). A drop that breaks loose from the tire on one turn rises vertically 54.0 cm above the tangent point. A drop that breaks loose on the next turn rises 51.0 cm above the tangent Figure P7.8 Problems...
A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel, of radius 0.357 m, and observes that drops of water fly off tangentially. She measures the height reached by drops moving vertically. A drop that breaks loose from the tire on one turn rises h = 54.2 cm above the tangent point. A drop that breaks loose on the next turn rises 51.0 cm above the tangent point. The height to...
A student holds a spinning bicycle wheel while sitting
motionless on a stool that is free to rotate about a vertical axis
through its center (see the figure below). The wheel spins with an
angular speed of 16.1 rad/s and its initial angular momentum is
directed up. The wheel's moment of inertia is 0.110 kg ·
m2 and the moment of inertia for the student plus stool
is 3.30 kg · m2.
(a)
Find the student's final angular speed (in...
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