п»їPractical a few
________________________________________________________________________ To find the force regular of a spring
To study the application of Hooke's Law.
To study the forces in balance.
To study the resolution of vector quantities.
Apparatus and Materials:
1 . Spring
2 . Plumb-line
4. Slotted masses 100g with hanger
6. Retort stand
several. Nail or perhaps pin
1 . Build the device as shown in Determine 4-1 beneath.
2 . Adapt the planting season, so that it exercises horizontally.
3. The angle between the plumb-line and the section AB can be Оё. some. The mass of the fill is meters, its weight is usually mg.
g = 9. 80 ms-2
m = mass in the load
Оё sama dengan angle between your plumb-line as well as the section ABDOMINAL
x = extension in the spring
k = force continuous of the planting season
l = worked out length of the planting season
lo = unstretched length of the spring
If the system is in equilibrium, the forces operating at the point B happen to be in sense of balance
magnesium = To cos ОёвЂ¦вЂ¦вЂ¦вЂ¦. (1)
kx sama dengan T trouble ОёвЂ¦вЂ¦вЂ¦вЂ¦... (2)
kx sama dengan mg tan Оё
A graph of x against tan Оё will yield a straight collection.
The lean is comparable to.
1 ) Measure the unstretched length, lo of the planting season before establishing the equipment. 2 . Modify the planting season, so that it stretches horizontally.
several. Measure the viewpoint Оё involving the plumb-line and the section ABS. 4. Gauge the new duration, l of the spring.
5. Calculate recognized, x from the spring. [where times = m вЂ“ lo] 6. Pull the spring area way to vary the length m to obtain 8-10 (8) models of beliefs of Оё and by. Note: before taking the value of the angle Оё, make sure that the spring is horizontal. several. Tabulate: back button, Оё, suntan Оё.
8. Determine the gradient from the graph.
being unfaithful. Determine the force frequent, k with the spring.