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## when we apply brakes in the car,it retards the motion;although it is an internal force.why?

Asked by 26th February 2008 6:05 PM

## Is work done when adonkey is carrying a load on its back?

Asked by 13th March 2008 10:49 AM

## A small block of mass m kept on a rough inclined surface of inclination 'A' fixed in a elevator.The elevator goes up witha uniform velocity v and the block does not slide on the wedge.The work done by the force of friction in time t will be??

Asked by Malavika Umesh 18th May 2015 6:51 PM

## what is the relation between friction and gravity?

Asked by smarttech2090 12th October 2017 7:57 PM

## A coolie X is carrying a load on his head climbs up a slope and another Y carrying the identical load on his head moves the same distance on the frictionless horizontal platform.Who does more work? Explain the reason

Asked by Prameela 16th October 2017 10:10 PM

## What is meant by a polushed surface . Does polishing affects the transfer of energy

Asked by lovemaan5500 6th November 2017 7:15 PM

## A rope of length 30 cm is on a horizontal table with maximum length hanging from edge A of the table. The coefficient of friction between the rope and the table is 0.5 .The dist of C.M from the A is??

Asked by chandanbr6004 11th November 2017 3:52 AM

## ques 1

Asked by rbhatt16 11th November 2017 7:37 AM

## A frictionless heat engine can be 100% only if exhaust temp is? A-0degree Celsius, 0kelvin,equal to input temp, half of input temp.

Asked by Priyanka 13th November 2017 11:24 PM

## A SMALL COIN IS PLACED ON A REORD ROTATING AT 94/3 REV/MINUTE. THE COIN DOESNOT SLIP ON THE RECORD.WHERE DOES IT GET THE REQUIRED CENTRIPETAL FORCE FROM?

Asked by haroonrashidgkp 20th November 2017 8:24 PM

### CBSE XII Science Physics

Asked by sudheerkapoor67 25th January 2018 4:35 PM

## Why metallic machine parts get jammed in water

Asked by nikhilkumarlbs 20th February 2018 3:34 AM

## while finding the static and kinetc friction between 2 blocks out of which 1 is placed on other, mass of which block should be considered? the above placed or below placed block?

Asked by imtiyazmulla68 14th April 2018 2:33 PM

## Sir what is the direction of friction on the wheels of bicycle when it is padddaling  and non pedalling . Give and with diagram

Asked by venkat 27th April 2018 11:44 AM

## Sir  Pl solve question no-3

Asked by shobhit 14th May 2018 8:52 AM

## what is the unit of friction

Asked by bhavesh.ingale73 30th July 2018 12:02 PM

## what is relation between angle of friction and angle of repose . and how we this in solving questions

Asked by nishtha02082002 12th August 2018 11:21 AM

## when we try to push a very heavy box kept on ground,it does not move al all.which force is preventing this box to move forward?where does this force act?

Asked by kumerjeet2 19th August 2018 7:37 PM

## Ref 746

Asked by arup.isro 19th August 2018 10:30 PM

## If A particle of mass m resting at the top of a fixed smooth hemisphere of radius R is displaced then the angle with vertical at which it looses contact with the surface is

Asked by m.nilu 6th September 2018 11:14 PM

## What is friction

Asked by guria.sushma21 2nd October 2018 4:01 PM

## a forceof 18n is required to move an object from rest.the value of sliding friction is (a)F=18n b)F>18n c)F<18n d)f=18n

Asked by arajeevshashank 5th October 2018 9:30 PM

## Solve:

Asked by Anish 22nd October 2018 11:56 AM

## Explain that friction is a friend or foe with best examples.Please answer this quickly as this is very urgent.

Asked by manishasain28 23rd November 2018 5:43 PM