Friction, Physics

Assignment Help:

A thin rod of length 1 m is fixed in a vertical position inside a train, which is moving horizontally with

constant acceleration 4 m/s2. A bead can slide on the rod, and friction coefficient between them is 1/2.

If the bead is released from rest at the top of the rod, find the time when it will reach at the bottom.

Solution) If mass of bead is m;

mg-µN=ma

Now, N=pseudo force due to acceleration of train, which is equal to 4m Newton.

 =>   mg-µ(4m)=ma

=>  g-4µ=a

=>  a=8ms-2

 

Using, second equation of motion:

1=0.5(8)t2

T=0.5sec

 


Related Discussions:- Friction

Energy conservation, a compreesed spring is used to send a cart around circ...

a compreesed spring is used to send a cart around circular loop what is the friction

Inelastic collision, INELASTIC COLLISION:  "The collision in which tota...

INELASTIC COLLISION:  "The collision in which total momentum is preserved but total K.E of system is not conserved is known as inelastic collision". It is to be noted that m

What wavelength does the observer find in each case, A commuter train blows...

A commuter train blows its horn as it passes a passenger platform at a constant speed of 40.0m/s. The train horn sounds at a frequency of 305 Hz when the train is at rest. (a) W

Fizeau method, Fizeau method (A. Fizeau, 1851): One of the first reall...

Fizeau method (A. Fizeau, 1851): One of the first really relativistic experiments intended to calculate the speed of light. Light is flow through a spinning cogwheel driven th

Weber, Weber; Wb (after W. Weber, 1804-1891): The derived SI unit of m...

Weber; Wb (after W. Weber, 1804-1891): The derived SI unit of magnetic flux equivalent to the flux that, relating a circuit of one turn, generates in it an electromotive force

Evaluate kinetic energy and momentum, If a proton and an electron have same...

If a proton and an electron have same de Broglie wavelength, which has more kinetic energy and momentum?

What is the force essential to accelerate a mass, Q. What is the force esse...

Q. What is the force essential to accelerate a mass of one kilogram one meter per second per second? Answer:- Fundamentally you have defined the Newton. Force is the ve

Increased speed by using a pulley, Using a pulley Use the pulley set-up...

Using a pulley Use the pulley set-up shown in experiment A 12. Apply the force on the movable pulley and get how rapidly the weight on the other end of the string rises.

Estimate the specific heat for the substance, It takes 46.0 J to raise the ...

It takes 46.0 J to raise the temperature of an 10.1 g piece of unknown substance from 13.0 o Cto  40.1 o C. What is the specific heat for the substance?

Write Your Message!

Captcha
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