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

 

Posted Date: 3/11/2013 12:44:42 AM | Location : United States

Ask an Expert

Related Discussions:- Friction, Assignment Help, Ask Question on Friction, Get Answer, Expert's Help, Friction Discussions

Write discussion on Friction
Your posts are moderated

Write your message here..

Related Questions

#titlethermodynemics.., describe constant volume gas thermometer describe constant volume gas thermometer

What is residual magnetism?, It is the magnetic flux density which still re... It is the magnetic flux density which still remains in magnetic materials even when the magnetic force is removed. It is measured or calculated in Weber/m 2 .

Define perfectly elastic body, A body which gets its real configuration imm... A body which gets its real configuration immediately and completely after the removal of deforming force from it, is called as perfectly elastic body. Phosphor bronze and quartz ar

What is a digital signal, What is a digital signal? Describe the function o... What is a digital signal? Describe the function of modem in data communication. Write two benefits of digital communication

Gray, Gray; Gy (after L.H. Gray, 1905-1965): The derived SI unit of ab... Gray; Gy (after L.H. Gray, 1905-1965): The derived SI unit of absorbed dose, described as the absorbed dose wherein the energy per unit mass imparted to the matter through ion

Principle rays to contribute to the image, A person is tasked with creating... A person is tasked with creating a ray diagram to resolve the characteristics of the image of an object formed by a concave lens. The person has accurately drawn the principal axis

Muon experiment, Muon experiment: An experiment which reveals verifica... Muon experiment: An experiment which reveals verification of the prediction of time dilation by special relativity. Muons, that are short-lived subatomic particles, are genera

Oscillators, Tuned oscillator Tuned oscillator

What are ferromagnetic substances, a) Formation of domains b) On the bas... a) Formation of domains b) On the basis of domains formed c) These are strongly attracted in an external magnetic field i.e. they easily go from low to high field region d

Define neutron, Neutron is a fundamental particle which is necessary consti... Neutron is a fundamental particle which is necessary constituent of all nuclei except that of hydrogen molecule. It was discovered by Chadwick. (1) The charge of neutron: It is