Recent content by Plasm47

The problem can be minimize by using more than one armature

1. Small electric motors with only one armature loop sometimes get stuck. They can be started again by giving the armature a small twist. Looking at the diagram below, what might be the explanation for the motor not being able to start on its own? When the brush(es) reaches the split within...

wouldn't my two first sentences be an example of that? so that would make one value. i guess my last sentence is just an extension to the first value.

Explain how a skier can have more than one value for gravitational potential energy at anyone time? My attempt at an answer. Consider the position of the skier is relative to the bottom of the hill. Therefore the skier has gravitational potential energy as he/she descends down the hill. At...

Oh yeah! the kinetic energy and velocity in (d) are the same as those calculated in (b) thanks for all your help, greatly appreciated!

ok that makes sense. So that being said, i'll post what i got for (a) a)to calculate work, solve for area under curve W= l x w + (bXh)/2 W= 2m x 4N + (2m x (6N-4N)/2 W= 8J + 2J w= 10 J The Ek is equivalent to w since there is no work lost in the process. Ek= 10J now, solve for velocity...

okay, in that case: a)to calculate work, solve for area under curve W= l x w + (bXh)/2 W= 2m x 4N + (2m x (6N-4N)/2 W= 8J + 2J w= 10 J The Ek is equivilant to w since there is no work lost in the process. Ek= 10J now, solve for velocity Ek= 0.5 (m)v2 v2= 0.5(2.0kg)/10J v2= 0.1...

I thought only the area under the variables (x=2, y=4) were considered in the calculations, thus meaning anything that exceeps 4N is irrelavent. Please explain furthur so I can understand the procedure.

-------------------------------------------------------------------------------- In the graph below, forces labelled positive act in the direction of motion of the object, forces labelled negative oppose the motion. The object under consideration has a mass of 2.0kg and was initially at rest...

In the graph below, forces labelled positive act in the direction of motion of the object, forces labelled negative oppose the motion. The object under consideration has a mass of 2.0kg and was initially at rest. Calculate its kinetic energy and speed when a) d= 2.0m b) d= 4.0m c) d=6.0m d)...