Yognarayan posted an Question
June 30, 2020 • 23:56 pm 30 points
  • IIT JAM
  • Physics (PH)

Consider a vehicle going on a horizontal road towards east. neglect any force by the air. the frictional forces on the vehicle by the road (a) is towards east i

Consider a vehicle going on a horizontal road towards east. Neglect any force by the air. The frictional forces on the vehicle by the road (a) is towards east if the vehicle is accelerating (6) is zero if the vehicle is moving with a uniform velocity (c) must be towards east (d) must be towards west.

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    Ghost. best-answer

    if car moving with uniform velocity experience no frictional force then it should never stop, then it should be possible to cover infinite distance with uniform velocity because it experience no force, as far as i know frictional force is f=-bx'(derivative of x wrt time, i.e velocity), therefore every moving object whether its uniform or non uniform experience frictional force. In case if i am wrong then i apologize for it. Wishes.

  • comment-profile-img>
    Ghost.

    option (c) is correct. Frictional force come into play whenever a object is moving doesn't matter whether it's accelerated or constant velocity & it always oppose motion, point of contact try to mive in west direction so in your case friction must be in east direction.

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    according to HCV.. A AND B is correct

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