Physics, 04.12.2019 02:31, selenamoreno8713
Amassless spring has unstretched length l₀ and force constant k. one end is now attached to the ceiling and a mass m is hung from the other. the equilibrium length of the spring is now l₁.
(a) write down the condition that determines l₁.
suppose now the spring is stretched a further distance x beyond its new equilibrium length. show that the net force (spring plus gravity) on the mass is f = -kx. that is, the net force obeys hooke's law, when x is the distance from the equilibrium position — a very useful result, which lets us treat a mass on a vertical spring just as if it were horizontal.
(b) prove the same result by showing that the net potential energy (spring plus gravity) has the form u (x) = const + 1/2 kx².
Answers: 3
Physics, 21.06.2019 22:30, smusisca53
Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?
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Physics, 22.06.2019 02:00, Needalittlehelp
Figure 9 on page 362 shows various motions of balls. the curved path followed by the yellow ball in b in picture b is result of a) inertia b) centripetal motion c) gravity and horizontal velocity d) linear motion
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Amassless spring has unstretched length l₀ and force constant k. one end is now attached to the ceil...
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