GutsnGlory
27.08.2019 •
Mathematics
How should i attempt this question:
"a computer hard disk starts from rest, then speeds up with an angular
acceleration of 190 rad/s2
until it reaches its final angular speed of
7 200 rpm. how many revolutions has the disk made 10.0 s after it starts
up? (hint: it stops accelerating before 10.0 s pass.)"
Solved
Show answers
More tips
- P Philosophy How did the concept of module arise in computer science?...
- D Dating, Love, Relationships Why Should the Man be Active and the Woman Passive during Foreplay?...
- S Society and Politics Выборы: Смысл, Значение и Отражение...
- B Business and Finance How to Get Your Money Back When Lending? Top 7 Ways...
- F Family and Home Do Lullabies Help Babies Sleep or Is it Just a Myth?...
- F Family and Home Why Does God Punish Us Constantly and How Can We Fix It?...
- D Dating, Love, Relationships Why do we feel shame?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- O Other How to Accidentally Get a Rare Coin with Your Change and How to Know Its Value?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
Answers on questions: Mathematics
- M Mathematics HELP ME PLS a circle has been divided into 36 equal angles what is the measure of each angle?...
- M Mathematics Complete the equation describing how x and y are related....
- M Mathematics 2. At Washington High School, 35% of all students own a Wii system. If there are 500 students at the school, how many own a Wii game system?...
- M Mathematics Sabendo que o seguimento AD é bissetriz do ângulo BÂC, então, o valor desse ângulo BÂC é:...
- M Mathematics Brainliest, 10 Points, & Thanks if answer to these questions...
- M Mathematics Please help with theseeee...
- M Mathematics Please help! :,( my grade is horrible...
- M Mathematics HELP ME ON THIS I HAVE MORE....
- M Mathematics Helpppppppppp love u who ever helped...
- M Mathematics What is the volume of the shape in the picture?...
Ответ:
first part is when it was accelerating.. that time use the equation of motion and calculate what is the total angle covered and hence you get the number of revolutions
then find the time of acceleration..so you ll understand for how much did you do the above calculation
for the rest of the time, the speed is constant (final angular speed).. so now you just use
w= theta/ time.. and get theta and again calculate the number of revolutions!
Ответ:
idk sorry
Step-by-step explanation: