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

What mass of coal can the barge carry in freshwater, An open barge has the ...

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

Faradays law, FARADAYS LAW: When the magnetic flux through the coil is ...

FARADAYS LAW: When the magnetic flux through the coil is made to vary, an emf is induced in the coil.  The magnitude of the induced emf is proportional to the rate of change of

Filter, what is resistor filter?

what is resistor filter?

Describe the slope of the solid-liquid phase , A solid substance has a mola...

A solid substance has a molar volume which is  smaller than that of its liquid phase. Which of the following statements regarding the solid-liquid phase transition is/are true?

WORK AND ENERGY, A boy throws a ball of mass 20 kg vertically upwards.It ra...

A boy throws a ball of mass 20 kg vertically upwards.It raises to a maximum height of 100 m.At what height will the kinetic energy be reduced to 70%?

Determine the maximum height the pinball rolls, Let's say I have a pinball ...

Let's say I have a pinball (solid sphere) with a given mass and radius, and it is held back at a certain distance from equilibrium on a spring. The spring constant k is given, and

Illustrate how is nuclear fission different from fusion, Q. Illustrate how ...

Q. Illustrate how is nuclear fission different from nuclear fusion? Answer:- Nuclear fusion is taking two different atoms as well as combining them in to one atom while nu

Explain the formation of the final image of an object, With the help of a r...

With the help of a ray diagram, explain the formation of the final image of an object in a compound microscope. Derive a mathematical expression for its magnifying power.

Refraction law, Refraction law: For a wavefront travelling by a bounda...

Refraction law: For a wavefront travelling by a boundary among two media, the first along a refractive index of n 1 , and the other with one of n­, the angle of incidence thet

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