A pendulum is constructed by attaching a very light-weight string to a cylinder of radius R and wrapping the string around the cylinder so that a mass m at the end of the string forms a pendulum in a plane perpendicular to the axis of the cylinder. Assume that the unwrapped part of the string remains straight. What is the equation of motion? What quantities are conserved? What is the frequency of small oscillations? Around which angle are the oscillations equal in angular amplitude?

ammonium chloride & tallow

their crystal patterns have been disrupted by stress

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.