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

Synaptic normalization mechanism, Diagram of the network looks: (b)...

Diagram of the network looks: (b) When both x and y are large, i.e., both A and B are firing, w is increasing without bound. When one or both of x and y are small, w does n

Newton''s rings method, Q.   Explain with the help of diagram and experimen...

Q.   Explain with the help of diagram and experiment arrangement to produce Newton's rings.

Wedge plus pulley constraint, please explain wedge plus pulley constraint r...

please explain wedge plus pulley constraint relation.

Determine the vertical reaction, The boom DF and the column DE have a unifo...

The boom DF and the column DE have a uniform weight of P55 N/m and the chain and load at F is P56 kN.  Determine the Shear Force in kN rounded to 1 DP and the Bending Moment in kN.

Michelson, why one side of glass has been coated with silver..?

why one side of glass has been coated with silver..?

Why x-rays are not used in microscopes, Q. Why X-rays are not used in micro...

Q. Why X-rays are not used in microscopes? 1) The wavelength of X-rays is slighter than that of the visible light. 2) X-rays can't be focussed as visible radiations are foc

Explain generation of electrical energy, Explain Generation of electrical e...

Explain Generation of electrical energy Generation of electrical energy : The conversion of energy available in dissimilar forms  in nature into electrical energy is called as

Calculate the torque, A painter uses a 25.8-cm long screwdriver to pry the ...

A painter uses a 25.8-cm long screwdriver to pry the lid off of a can of paint. If a force of 85 N is applied to move the screwdriver 60.0° from the perpendicular, calculate t

Drag, The parachute on a race car that weighs 8750 N opens at the end of a ...

The parachute on a race car that weighs 8750 N opens at the end of a quarter-mile run when the car is traveling 38 m/s. What net retarding force (magnitude) must be supplied by the

Calculate energy lost - friction, The big hill on a roller-coaster ride is ...

The big hill on a roller-coaster ride is 91 m tall. If the mass of the roller-coaster car and its two riders is 314 kg and the maximum velocity reached by this roller-coaster r

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