00:01
Okay, so we're talking about a block on a surface attached to a spring with some spring constant k and it's pulled back a distance d and the block has some mass m.
00:18
And then we've got different values of mk and d or different multiples of mk and d and we're asked when the force is the biggest and to rank them.
00:31
So the five scenarios we have is a mass 2m, spring constant k and a distance d.
00:44
The second scenario is given by a mass m, a spring constant 2k and a distance d.
00:56
The third scenario is a mass m, a spring constant 2k, and a distance d.
01:06
2k and a distance a half d.
01:12
Scenario 4 is a mass m, a constant k and a distance d, and scenario 5 is mk and 2d.
01:29
Now, because the surface is frictionless, the mass won't actually play a role because the force experienced by the block due to the spring is just given by hook.
01:43
Law as being the magnitude of it is k times the extension of the spring.
01:52
And so it's only the k and ds that are going to affect anything.
01:55
If there was friction, then the resultant force would be this minus the frictional force, which would, you know, be the reaction force times the coefficient of friction and the reaction force involves the masses.
02:08
So that's where the mass would come into play...