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Q. 14.8( 8 Votes )

A reference frame attached to the earth
A. is an inertial frame by definition

B. cannot be an inertial frame because the earth is revolving around the sun

C. is an inertial frame because Newton’s laws are applicable in this frame

D. cannot be an inertial frame because the earth is rotating about its axis.

Class 11th HC Verma - Concepts of Physics Part 1 5. Newton’s Laws of Motion

Answer :

non-inertial frames are the accelerating frames and ∵ the earth is revolving around the sun and rotating around the axis, earth is a non-inertial frame.

And hence option B and D are the correct

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PREVIOUSA free 238U nucleus kept in a train emits an alpha particle. When the train is stationary, a nucleus decays and a passenger measures that the separation between the alpha particle and the recoiling nucleus becomes x at time t after the decay. If the decay takes place while the train is moving at a uniform velocity u, the distance between the alpha particle and the recoiling nucleus at a time after the decay as measured by the passenger NEXTA particle stays at rest as seen in a frame. We can conclude that

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