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Pseudo force is an imaginary force which...

Pseudo force is an imaginary force which is recognised only by a non-inertial observer to explain the physical situation according to newton’s laws. Magnitude of pseudo force Fp is equal to the product of the mass m of the object and the acceleration a of the frame of reference. The direction of the force is opposite to the direction of acceleration,`F_(p)=-ma`
spring weighing machine inside a stationary lift reads 50 kg when a man stand on it. What would happen to the scale reading if the lift is moving upward with (i) constant velocity (ii) constant acceleratioin

A

`"50kg wt",(50+(50a)/g)"kg wt"`

B

`50kg"wt",(50+(50a)/g)kg"wt"`

C

`50kg"wt",(50+(50a)/gkg"wt"`

D

`50kg"wt",((50g)/a)kg"wt"`

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Knowledge Check

  • Assertion: Pseudo force is an imaginary force which is recongnised only by a non-inertial observer to explain the physical situation according to newton's laws. Reason: Pseudo force has no physical origin, that is it is not caused by one of the basic interactions in nature. It does not exist in the action-reaction pair.

    A
    If both assertion `&` Reason are True `&` the Reason is a corrrect explanation of the Asserion.
    B
    If both Assertion `&` Reason are True but Reason is not correct explanation of the Assertion.
    C
    If Assertion is Trie but the Reason is False.
    D
    If both Assertion `&` Reason are false

  • When a net force acts on an object, the object will be accelerated in the direction of the force with an acceleration proportional to the

    A
    force on the object
    B
    velocity of the object
    C
    mass of the object
    D
    inertia of the object

  • Which one of the following forces is a pseudo force?

    A
    Force of friction
    B
    Force between an electron and a proton
    C
    Centrifual force
    D
    Gravitationa force between the planets and the sun

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