An electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel. The flywheel is a solid disk with a mass of 80.0kg and a dimaeter of 1.25m. It turns on a frictionless axle. Its pulley has much smaller mass and a radius of 0.230m. If the tension in the upper (taut) segment of the belt is 135 N and the flywheel has a clockwise angular acceleration of 1.67 rad/s^2, find the tension in the lower (slack) segment of the belt.
Sol: This problem seems to involve torque; I think solid disc Icm (moment of intertia) is 1/2MR^2; there are other unknown I'm sure but if someone can walk me through this problem (step by step), I'd be most appreciative. I have a test tomorrow. I tried and tried, but finally gave up as I must move on to other practice problems.
force net= upper force  lower force
But force net* radiuspulley= Itotal*angacceleration.
Now I total is the sum of the flywheel and the pulley.
Solve for lower force.
 👍
 👎
 👁
 ℹ️
 🚩
Answer this Question
Related Questions

physics
2. At time t =0, the current to the dc motor is reversed, resulting in an angular displacement of the motor shaft given by θ = (198 rad/s)t – (24 rad/s2)t2 – (2 rad/s3)t3 a. At what time is the angular velocity of the motor shaft zero? b. Calculate
 asked by bruce
 8,590 views

math
Some friends played a board game. During the game, one unlucky player had to move back 9 spaces 7 turns in a row. Find a number to represent that player's movements for those 7 turns. The number nothing represents that player's movements for those
 asked by juju
 2,997 views

Physics
skier of mass 79 kg is pulled up a slope by a motordriven cable. (a) How much work is required to pull him 80 m up a 30° slope (assumed frictionless) at a constant speed of 3.4 m/s? 1 J (b) What power (expressed in hp) must a motor have to perform this
 asked by Muriel
 2,930 views

Physics
A 20 kg crate is placed on a horizontal conveyor belt. The materials are such that us = 0.47 and uk = 0.21. What is the maximum acceleration the belt can have without the crate slipping? If acceleration of the belt exceeds the value determined in part A,
 asked by Leanna
 15,528 views

physics
A stone is suspended from the free end of a wire that is wrapped around the outer rim of a pulley, as shown in the figure (see the figure ). The pulley is a uniform disk with mass 10.4 and radius 51.0 and turns on frictionless bearings. You measure that
 asked by Anonymous
 10,954 views

science
1. What is the major cause of the greenhouse effect? carbon dioxide in the atmosphere my answer soot from coal plants in the water carbon dioxide in the water soot from coal plants in the atmosphere 2. What is the most effective method for monitoring the
 asked by Anonymous
 4,163 views

physics
A skier of mass 74 kg is pulled up a slope by a motordriven cable. (a) How much work is required to pull him 90 m up a 30° slope (assumed frictionless) at a constant speed of 3.0 m/s? J (b) What power (expressed in hp) must a motor have to perform this
 asked by monic
 3,125 views

Trig
assume a pulley has a radius of 12.96 cm. If it takes 18 seconds for 56 cm of belt to go around the pulley, find the angular velocity in radians per seconds
 asked by SK
 3,491 views

Physics
Dana loads luggage into an airplane using a conveyor belt tilted at an angle of 20°.She places a few pieces of luggage on the belt before it starts to move, then she turns the belt on. It takes the belt 0.70 s to reach its top speed of 1.2 m/s. Does the
 asked by CodyJinks
 3,238 views

physics
A pulley is suspended by a Cord (C). on one end of the pulley there is a 1.2 kg block and on the other is a 3.2 kg block.Determine the tension in this cord after the masses are released and before one hits the ground. Ignore the mass of the pulley and
 asked by Anonymous
 17,461 views

Physics
A piece of luggage is being loaded onto an airplane by way of an inclined conveyor belt. The bag, which has a mass of 10.0 kg, travels 6.50 m up the conveyor belt at a constant speed without slipping. If the conveyor belt is inclined at a 60.0° angle,
 asked by Jenny
 3,530 views

physics
A 20 kg crate is placed on a horizontal conveyor belt. The materials are such that μs = 0.6 and μk = 0.3. (c) What is the maximum acceleration the belt can have without the crate slipping? (d) If acceleration of the belt exceeds the value determined in
 asked by Kate
 1,962 views

Geometry II
A conveyor belt carries supplies from the first floor to the second floor, which is 12 feet higher. The belt makes a 60° angle with the ground. How far do the supplies travel from one end of the conveyor belt to the other? Round your answer to the nearest
 asked by Anonymous
 10,432 views

Math
Kathy spent 1/3 of her money. On a wallet and 1/4 of the remainder on abelt what fraction of her money did she spend on the belt what fraction as let after buying the belt and wallet
 asked by Anonymous
 3,073 views

university physics
Two blocks are connected by massless string that is wrapped around a pulley. Block 1 has a mass m1=4.20 kg, block 2 has a mass m2=1.30 kg, while the pulley has a mass of 2.10 kg and a radius of 27.4 cm. The pulley is frictionless, and the surface mass 1 is
 asked by Anonymous
 1,366 views

Physics
A skier of mass 76 kg is pulled up a slope by a motordriven cable. (a) How much work is required to pull him 40 m up a 30° slope (assumed frictionless) at a constant speed of 2.5 m/s? J I know that the answer to the first problem is 14896Joules, but I do
 asked by Kelsey
 1,277 views

Physics
Boxes are moved on a conveyor belt from where they are filled to the packing station 11.3m away. The belt is initially stationary and must finish with zero speed. The most rapid transit is accomplished if the belt accelerates for half the distance, then
 asked by Francis
 855 views

Physics
A motor lifts an elevator of mass m at constant speed. The power output of the motor is P and there are no frictional losses so that all the power output from the motor goes into lifting the elevator mass. What is the correct expression for the time
 asked by Bobby
 620 views

physics
Two rockets with the same mass are. Accelerated. Rocket A accelerates twice as fast as Rocket B. Which statement is correct? The motor in rocket A is four times as powerful as the motor and in rocket B The motor in rocket A Is twice as powerful as the
 asked by ashley
 3,045 views

Trig
A pulley with a diameter of 24 inches is driven by a belt which is moving 1045 ft/min. How many revolutions per minute are made by the pulley?
 asked by Katelyn
 1,907 views
Still need help?
You can ask a new question or browse existing questions.