Physics
Physics, 05.10.2019 04:20, youngsunc02

Two wooden crates rest on top of one another. the smaller top crate has a mass of m1 = 25 kg and the larger bottom crate has a mass of m2 = 91 kg. there is no friction between the crate and the floor, but the coefficient of static friction between the two crates is µs = 0.79 and the coefficient of kinetic friction between the two crates is µk = 0.62. a massless rope is attached to the lower crate to pull it horizontally to the right (which should be considered the positive direction for this problem).1)the rope is pulled with a tension t = 234 n (which is small enough that the top crate will not slide). what is the acceleration of the small crate? 2)in the previous situation, what is the magnitude of the frictional force the lower crate exerts on the upper crate? 3)what is the maximum tension that the lower crate can be pulled at before the upper crate begins to slide? 4)the tension is increased in the rope to 1187 n causing the boxes to accelerate faster and the top box to begin sliding. what is the acceleration of the upper crate? m/s25)as the upper crate slides, what is the acceleration of the lower crate?

answer
Answers: 1

Other questions on the subject: Physics

image
Physics, 22.06.2019 00:30, powberier6979
Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.
Answers: 2
image
Physics, 22.06.2019 11:50, kaylallangari2145
Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?
Answers: 2
image
Physics, 22.06.2019 15:30, anahitrejo1
1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?
Answers: 1
image
Physics, 23.06.2019 01:00, Shelleycarousel
Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.
Answers: 3
Do you know the correct answer?
Two wooden crates rest on top of one another. the smaller top crate has a mass of m1 = 25 kg and the...

Questions in other subjects:

Konu
Mathematics, 08.12.2020 06:20
Konu
Chemistry, 08.12.2020 06:20