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

Disk light second in circumference were to spin at 60 rpm, Q. What would oc...

Q. What would occur if a disk one light second in circumference were to spin at 60 RPM? Answer:- 60 revolutions for each minute is one revolution per second. 1 light se

Explain the procedure of finding miller indices, Explain the procedure of f...

Explain the procedure of finding Miller indices. Procedure of finding Miller indices: a. The intercepts of the needed plane onto the three coordinate axes has to be founded.

Is there enough room in barge toehold this amount of coal, An open barge ha...

An open barge has the dimensions 22x40x12m. If the bargeis made out of 4.0-cm-thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in f

What is coulomb, Q. What is Coulomb? One Coulomb is describe as the qua...

Q. What is Coulomb? One Coulomb is describe as the quantity of charge which when placed at a distance of 1 metre in air or vacuum from an equal and similar charge experiences a

Communication physics, In a transmitter the final stage class C amplified ...

In a transmitter the final stage class C amplified with 18V DC supply calculate what equivalent Road the transistor to an antenna with 50ohm load impedance design and draw an L n

Describe the resolution of the scanning electron microscope, Describe the r...

Describe the resolution of the scanning electron microscope. Resolution of the SEM (scanning electron microscope): The spatial resolution of the SEM depends onto the size of

Explain isolation transformers, What is the difference among isolation tran...

What is the difference among isolation transformers and step up or step down transformer? Actually an isolation transformer may be physically the similar as a Step up/Step Down

Charged particles through the circuit, Question: In that piece of a cir...

Question: In that piece of a circuit outside of any batteries or power supplies what is it that actually pushes charged particles through the circuit? Answer: By defini

Applications of superconductors, Applications of Superconductors - 1. El...

Applications of Superconductors - 1. Electrical Machines  2. Power Cables 3. Electro Magnets  4. Amplifiers 5. Cryotron 6. Magnetic Leviation 7. A 15 Phases

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