Find out it takes for it to stop rotating

Assignment Help Physics
Reference no: EM13117971

A firm wants to determine the amount of frictional torque in their current line of grindstones, so they can redesign them to be more energy efficient. To do this, they ask you to test the best-selling model, which is basically a diskshaped grindstone of mass 1.2 kg and radius 7.30 cm which operates at 700 rev/min. When the power is shut off, you time the grindstone and find it takes 39.0 s for it to stop rotating.

Reference no: EM13117971

Questions Cloud

Describe how structure relates to function in this system : Give an example of a simple structure/function relationship in animal physiology and describe how structure relates to function in this system.
Explain how much work must be done to place all the rope : A rope having a total mass of 0.4 kg and total length of 4 m has a 0.6 m of the rope hanging vertically down off a work bench. Explain how much work must be done to place all the rope on the bench?
How to measures of central tendency and variation : By using the results in (a), construct a boxplot. Indicate clearly on the boxplot the five-number summary. Are the data skewed? If so, describe its skewness.
Explain odds of hitting a bankrupt on wheel of fortune : Odds of Hitting a Bankrupt on Wheel of Fortune. Assume that the Wheel of Fortune has 24 slots, each subtending 15 degrees. There are two bankrupt slots.
Find out it takes for it to stop rotating : which is basically a diskshaped grindstone of mass 1.2 kg and radius 7.30 cm which operates at 700 rev/min. When the power is shut off, you time the grindstone and find out it takes 39.0 s for it to stop rotating.
How many coulombs of charge must have been transferred : In the reaction MnO4- + 8H+ + 5e- ⇔ Mn2+ + 4H20, the manganese in 3.95 grams of KMnO4 is reduced to Mn2+. How many coulombs of charge must have been transferred to the permanganate ion.
What is the probability that this couple first child : Assume that a man with dentinogenesis imperfecta, whose father had the disease but whose mother had normal teeth, married a woman with normal teeth. They have six children.What is the probability that this couple's first child will be a male with ..
Addressing inequality in education : Savage Inequalities is a wonderful book to reference here as it does point to the problem of inequitable funding. In other words the poor stay poor because the school is funded disproportionally from community to community.
Probability concepts and the standard normal distribution : Probability Concepts and the Standard Normal Distribution, What are some conditions under which business decisions are made using probability concepts? Provide at least two examples of subjective probability.

Reviews

Write a Review

Physics Questions & Answers

  What are the magnitude and direction of net force on the car

A 63 kg girl weighs herself by standing on a scale in an elevator. What is the force exerted by the scale while the elevator is descending at a constant speed of 10.0 m/s.

  Illustrate what will be the speed of the ball

peg is located a distance h directly below the point of attachment of the cord. If h = 0.90 L, illustrate what will be the speed of the ball when it reaches the top of its circular path about the peg?

  A very large number of polaroids

A very large number (N+1) polaroids are arranged in a sandwich.

  Calculating plants maximum possible and actual efficiency

Calculating plants maximum possible thermal and actual efficiency.

  What is the water level in the tank

Three forces are applied to a tree sapling, to stabilize it. If F1= 282 N and F2= 355 N, find F3 in magnitude and direction. The angle between F1 and F2 is equivalent to 110 degrees.

  Define the speed of the arrow as it leaves the bow

Algol consists of a 3.7 MSun main-sequence star and a 0.8 MSun subgiant. Why does this seem surprising, as a minimum at first.

  Explain how many homes could be heated with the waste heat

A typical American house requires an average 20 kW for heating. Explain how many homes could be heated with the waste heat of this one power plant?

  What is the maximum deformation of the bumper

what is the maximum deformation of the bumper. The coefficient of kinetic friction for a 25 bobsled on a track is 0.10. What force is required to push it down a 5 incline and achieve a speed of 64 at the end of 75.

  Find the coefficient of kinetic friction between the ramp

Julie drives 100 mi to her Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 25mph and the other half at 80. On her return trip, she drives half time at 25mph and half the time at 80 mph.

  What angle should the polarizing direction of middle sheet

What is the net force exerted by these two charges on the third charge = 46.5 placed between and at = -1.235 ? Your answer may be positive or negative, depending on direction of the force.

  How much deeper does the barge float

A slab of marble is resting on the ground. It weighs 600 N and has the dimensions 0.1m x 0.2m x 1.0m. What is the greatest pressure that the slab can exert on ground.

  To what angle did the pendulum swing on the other side

A 10 runaway grocery cart runs into the spring with spring constant 230 and compresses it by 65. What was the speed of the cart right before it hit the spring.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd