A machinist turns the power on to a grinding wheel

Assignment Help Physics
Reference no: EM13538137

A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 84 rad/s. The wheel is run at that angular velocity for 37 s and then power is shut off. The wheel slows down uniformly at 2.1 rad/s2 until the wheel stops. In this situation, the total number of revolutions made by the wheel is closest to

Reference no: EM13538137

Questions Cloud

What is the original temperature of the mercury : A 7 kg sample of mercury is completely solidified and liberates 110 kJ of energy. What is the original temperature of the mercury? (The melting point of mercury is 234 K, the heat of fusion of mercury is 11.3 kJ/kg, and the specific heat of mercury i..
What is the velocity of the first car after the collision : A 416 kg car moving at 17.8 m/s hits from behind another car moving at 11.3 m/s in the same direction. If the second car has a mass of 757 kg and a new speed of 13.0 m/s, what is the velocity of the first car after the collision?
The initial temperature of the copper : A 208 kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar? (The specific heat for copper is 386 J/kg?K, the heat of fusion for cop..
A machinist turns the power on to a grinding wheel : A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 66 rad/s. The wheel is run at that angular velocity for 37 s and then power is shu..
A machinist turns the power on to a grinding wheel : A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 84 rad/s. The wheel is run at that angular velocity for 37 s and then power is shu..
The increase in the length of the pipe : A steel pipe 22 m long, installed when the temperature was 15°C, is used to transport superheated steam at a temperature of 125 °C. Steel's coefficient of linear expansion is 1.2 × 10-5 K-1. The pipe is allowed to expand freely when the steam is tran..
Coefficients of volume expansion of mercury and glass : A glass flask has a volume of 900 ml at a temperature of 20° C. The flask contains 895 ml of mercury at an equilibrium temperature of 20°C. The temperature is raised until the mercury reaches the 900 ml reference mark. The coefficients of volume expa..
Find magnitude and direction of final velocity of the wreck : Two vehicles approach a right angle intersection and then collide. After the collision, they become entangled. If their mass ratios were 1:3 and their respective speeds as they approached were both 13 m/s, find the magnitude and direction of the fina..
Magnitudes for reflected-transmitted waves to incident wave : Consider a string consisting of two densities, p1 in region 1 where x 0. A continuous harmonic wave is incident from the left. What are the ratios of the square of the amplitude magnitudes for the reflected and transmitted waves to the incident w..

Reviews

Write a Review

Physics Questions & Answers

  Evaluate the magnitude and direction of the field

A proton moves perpendicular to a uniform magnetic field B at a speed of 1.10 107 m/s, evaluate the magnitude and direction of the field

  What accuracy will you quote the result

It is expected to measure an X-ray peak which occurs at an angle of  around 31.6g. Alter viewing the scale and pointer, with what accuracy w ill you quote the result?

  Find the angular frequency of the charge oscillations

A 14.0 capacitor and a 5.50 inductor are connected in series with an open switch. The capacitor is initially charged to 6.70 What is the angular frequency of the charge oscillations

  How much total mechanical energy was lost in the fall

A 12 gram ball is dropped form a height of 2.50m and is moving and is moving at 3.2m/s just before it hits the floor. how much total mechanical energy was lost in the fall

  Find the vibration frequency of the block

Inside a cart that is accelerating horizontally at acceleration ~a, there is a block of mass M connected to two light springs of force constants k1 and k2

  Q1 originally a wheel rotating about a fixed axis at a

q1. originally a wheel rotating about a fixed axis at a constant angular deceleration of 0.7 rads2 has an angular

  Find the average velocity and average speed of each swimmer

Jack and Jill exercise in a 25.0-m-long swimming pool. Jack swims nine lengths of the pool in 159.5 seconds, while Jill, the faster swimmer, covers ten lengths in the same time interval. Find the average velocity and average speed of each swimmer.

  Find the angular frequency of revolution of the electrons

In an experiment designed to measure the strength of a uniform magnetic field produced by a set coils, find the angular frequency of revolution of the electrons

  Calculate the ratio of their masses

Two wires on a piano are the same length and are stretched to the same tension. Wire 1 vibrates at a frequency 1.5 times that of wire 2. Calculate the ratio of their masses (m1/m2).

  What is the average current during this event

A 1500 car travelling at 26 suddenly runs out of gas while approaching the valley that looks like an inverted hump. 12m at the left where the care runs out of gas and 19 m at the right were it is headed. What will be the car's speed as it coasts into..

  What should be the magnitude of its radius of curvature

A spherical mirror is to be usedto form, on a screen located 4.50 m from the object, What should be the magnitude of its radius of curvature

  Find at what rate is he now losing thermal energy

A person is losing thermal energy through the skin at a rate of 120 W when his skin temperature is 30°C. find At what rate is he now losing thermal energy

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