Friction, Physics

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







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

Write discussion on Friction
Your posts are moderated
Related Questions

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 .

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? Describe the function of modem in data communication. Write two benefits of digital communication

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

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


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

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