A 4.00-kg block is attached to a vertical rod by means of two strings. when the system rotates about the axis of the rod, the st
rings are extended as shown in fig. p5.104 and the tension in the upper string is 80.0 n. (a) what is the tension in the lower cord? (b) how many revolutions per minute does the system make? (c) find the number of revolutions per minute at which the lower cord just goes slack. (d) explain what happens if the number of revolutions per minute is less than that in part (c).
studies show that our brains are faster at processing opinions we agree with. a crisis is enough to change an attitude about something because a person isn't looking from the outside and is actually experiencing it firsthand which will change them
So this form of energy is gravitational potential, which is defined as mass*height*gravity so if we use gravity as 10 m/s^2 to keep it simple we can do 150kg*10m*10m/s^2 and we get a total of 15,000 joules
