Avoid listening to loud music, And get regular checkups
To solve this problem it is necessary to apply the concepts related to stress failure, stress and last module Young.
Critical stress by definition is given as,
Where,
Strain fracture toughness
Y = Young's module
a = Length surface crack
Our values are given as,
Replacing in our previous equation we have,
Therefore the critical stress is 984.77Mpa
When the train reaches the bottom of the track and is traveling along the ground, its kinetic energy is 2,000 J.
When you start sliding the couch, you have to overcome the static friction of the carpeted floor, which is usually very big, especially due to the texture of the carpet. However, as long as you get it moving, you only have to apply the force to overcome the kinetic friction, which is smaller than the static friction.
Answer
160,72N
Explanation
W=mg
=(16.4)(9.8)