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 is the magnitude of the magnetic induction, The magnetic vector potent...

The magnetic vector potential in a specific region is a constant vector having magnitude 4πX10 5 units and points along the positive x-axis. What is the magnitude of the magnetic

Describe bernoulli''s theorem, It describes that the total energy (pressure...

It describes that the total energy (pressure energy, potential energy and kinetic energy) of an incompressible and non-viscous fluid in steady flow by a pipe remains constant throu

Pn junction is represented as a diode, Pn junction is represented as a diod...

Pn junction is represented as a diode Pn junction is represented as a diode D in the emitter as represented in figure. If a voltage VBB is applied between bases with emitter op

.induced emf, applications of statically induced emf and dynamically induce...

applications of statically induced emf and dynamically induced emf

Find average distance of an electron in an atom, The average distance of an...

The average distance of an electron in an atom from its nucleus is of the order of: (1) 10 6 m (2) 10 -6 m (3) 10 -10 m (4)10 -15 m Ans: (3) 10 -10 m

Sphere moves up, A sphere of radius R touches two adjacent sides of a room....

A sphere of radius R touches two adjacent sides of a room.It also touches an inclined plane at a height of R/5 from the floor.the inclined plane moves towards the sphere at the spe

Find current gain ß of a transistor, Q. Collector current I c =20 mA and ba...

Q. Collector current I c =20 mA and base current I b = 50 A. Find current gain β of a transistor. β = I C / I B = 20 X 10 -3 / 50 X 10 -6 = 400

Electrostatic potential and capacitance., if a body contain n1 electron and...

if a body contain n1 electron and n2 proton what is the total charge on the body?

Explain biot savart law and measure magnetic field, a)  Explain ampere's la...

a)  Explain ampere's law and calculate magnetic field at any point P beacuse of (i)  Infinite long wire (ii)  Inside a solenoid (iii)  Inside a toroid   b) Explain Biot S

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