Applications of Newton’s Laws
PHXI05:LAWS OF MOTION

363173 Blocks \(A\) and \(B\) each have same mass \(m=1 {~kg}\). Determine the largest horizontal force \(P\) (in newton) which can be applied to \(B\) so that \(A\) will not slip up on \(B\). Neglect any friction.
supporting img

1 \(10\,m/{s^2}\)
2 \(18\,m/{s^2}\)
3 \(15\,m/{s^2}\)
4 \(20\,m/{s^2}\)
PHXI05:LAWS OF MOTION

363174 If the elevator in the shown figure is moving upwards with constant acceleration \(1\,m/{s^2}\), the tension in the string connected to block \(A\) of mass 6 \(kg\) would be (\(g = 10\,m/{s^2}\))
supporting img

1 \(60\,N\)
2 \(66\,N\)
3 \(54\,N\)
4 42 \(N\)
PHXI05:LAWS OF MOTION

363175 Assertion :
Pseudo force is recognised only by a non-inertial observer to explain the physical situation according to Newton's law.
Reason :
Pseudo force does not exist in the action-reaction pair.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363176 A man of mass \(60\;kg\) is riding in a lift. The weight of the man, when the lift is accelerating upwards and downwards at \(2\;m{s^{ - 2}},\) are respectively (take, \(g = 10\;m{s^{ - 2}}\) )

1 \(720\;N\) and \(480\;N\)
2 \(480\;N\) and \(720\;N\)
3 \(600\;N\) and \(600\;N\)
4 None of these
PHXI05:LAWS OF MOTION

363173 Blocks \(A\) and \(B\) each have same mass \(m=1 {~kg}\). Determine the largest horizontal force \(P\) (in newton) which can be applied to \(B\) so that \(A\) will not slip up on \(B\). Neglect any friction.
supporting img

1 \(10\,m/{s^2}\)
2 \(18\,m/{s^2}\)
3 \(15\,m/{s^2}\)
4 \(20\,m/{s^2}\)
PHXI05:LAWS OF MOTION

363174 If the elevator in the shown figure is moving upwards with constant acceleration \(1\,m/{s^2}\), the tension in the string connected to block \(A\) of mass 6 \(kg\) would be (\(g = 10\,m/{s^2}\))
supporting img

1 \(60\,N\)
2 \(66\,N\)
3 \(54\,N\)
4 42 \(N\)
PHXI05:LAWS OF MOTION

363175 Assertion :
Pseudo force is recognised only by a non-inertial observer to explain the physical situation according to Newton's law.
Reason :
Pseudo force does not exist in the action-reaction pair.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363176 A man of mass \(60\;kg\) is riding in a lift. The weight of the man, when the lift is accelerating upwards and downwards at \(2\;m{s^{ - 2}},\) are respectively (take, \(g = 10\;m{s^{ - 2}}\) )

1 \(720\;N\) and \(480\;N\)
2 \(480\;N\) and \(720\;N\)
3 \(600\;N\) and \(600\;N\)
4 None of these
PHXI05:LAWS OF MOTION

363173 Blocks \(A\) and \(B\) each have same mass \(m=1 {~kg}\). Determine the largest horizontal force \(P\) (in newton) which can be applied to \(B\) so that \(A\) will not slip up on \(B\). Neglect any friction.
supporting img

1 \(10\,m/{s^2}\)
2 \(18\,m/{s^2}\)
3 \(15\,m/{s^2}\)
4 \(20\,m/{s^2}\)
PHXI05:LAWS OF MOTION

363174 If the elevator in the shown figure is moving upwards with constant acceleration \(1\,m/{s^2}\), the tension in the string connected to block \(A\) of mass 6 \(kg\) would be (\(g = 10\,m/{s^2}\))
supporting img

1 \(60\,N\)
2 \(66\,N\)
3 \(54\,N\)
4 42 \(N\)
PHXI05:LAWS OF MOTION

363175 Assertion :
Pseudo force is recognised only by a non-inertial observer to explain the physical situation according to Newton's law.
Reason :
Pseudo force does not exist in the action-reaction pair.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363176 A man of mass \(60\;kg\) is riding in a lift. The weight of the man, when the lift is accelerating upwards and downwards at \(2\;m{s^{ - 2}},\) are respectively (take, \(g = 10\;m{s^{ - 2}}\) )

1 \(720\;N\) and \(480\;N\)
2 \(480\;N\) and \(720\;N\)
3 \(600\;N\) and \(600\;N\)
4 None of these
PHXI05:LAWS OF MOTION

363173 Blocks \(A\) and \(B\) each have same mass \(m=1 {~kg}\). Determine the largest horizontal force \(P\) (in newton) which can be applied to \(B\) so that \(A\) will not slip up on \(B\). Neglect any friction.
supporting img

1 \(10\,m/{s^2}\)
2 \(18\,m/{s^2}\)
3 \(15\,m/{s^2}\)
4 \(20\,m/{s^2}\)
PHXI05:LAWS OF MOTION

363174 If the elevator in the shown figure is moving upwards with constant acceleration \(1\,m/{s^2}\), the tension in the string connected to block \(A\) of mass 6 \(kg\) would be (\(g = 10\,m/{s^2}\))
supporting img

1 \(60\,N\)
2 \(66\,N\)
3 \(54\,N\)
4 42 \(N\)
PHXI05:LAWS OF MOTION

363175 Assertion :
Pseudo force is recognised only by a non-inertial observer to explain the physical situation according to Newton's law.
Reason :
Pseudo force does not exist in the action-reaction pair.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363176 A man of mass \(60\;kg\) is riding in a lift. The weight of the man, when the lift is accelerating upwards and downwards at \(2\;m{s^{ - 2}},\) are respectively (take, \(g = 10\;m{s^{ - 2}}\) )

1 \(720\;N\) and \(480\;N\)
2 \(480\;N\) and \(720\;N\)
3 \(600\;N\) and \(600\;N\)
4 None of these