A steel block of mass m hangs from a vertical spring whose other end is attached to the underside of a horizontal beam. Air resistance is negligible, and the block vibrates with period 3 seconds (time for the motion to repeat itself). When an iron block of mass 4kg is attached to the steel block, the motion becomes periodic of period 5 seconds. Find
(a) the spring constant (Hooke’s constant)
(b) the mass m of the steel block.
Name:
Anonymous2007-10-18 14:35
1. find class notes
2. wikipedia
3. ???
4. profit?
Name:
Anonymous2007-10-18 18:11
1) look confused
2) hold out arms
3) ???
4) shot web
Name:
Anonymous2007-10-18 19:59
T = 2pi*sqrt(M/K)
3 = 2pi*sqrt(M/K)
5 = 2pi*sqrt((M+4)/k)
Two equations, two unknowns. Solve it.
Name:
Anonymous2007-10-23 7:23
is that year 12 wook or 1st year uni? or year 11?
Name:
Anonymous2007-10-24 16:53
i'd go with first year uni because hookes constant is barely talked about at year 12/13
Name:
Anonymous2007-10-25 2:35
actually we did hooks law in yr 12 but only in physics, not much in math...but this yr 1st yr uni were doing springs and ODEs in maths and :(