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  4. An elevator is accelerating upwards with an acceleration of 6 m/s2. Inside it a person of mass 50 kg is standing on a weighing machine which is kept on an inclined plane having angle of inclination 60° The reading of the weighing machine is: <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/b043b1b2ea8986107452a616224aa641-.png />

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Q. An elevator is accelerating upwards with an acceleration of $6 \,m/s^{2}$. Inside it a person of mass $50\, kg$ is standing on a weighing machine which is kept on an inclined plane having angle of inclination $60^{\circ}$ The reading of the weighing machine is:
image

Laws of Motion

Solution:

$N - mg\,cos\,60^{\circ}=ma\,cos\,60^{\circ}$
$N=m\,cos\,60^{\circ} (a+g)=400\,N$
image
Reading will be $40\,kg$