Lessons

Eamcet Physics
1 st Year : Unit 3.2( Laws of Motion ) - Connected Bodies

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Q.

A man of mass 60 kg is standing on a weighing machine kept in a box of mass 30 kg as shown in the diagram. If the man manages to keep the box stationary the reading in the weighing machine is

View Answer

Correct choice: B

Explanation:

T = R + 30g, T + R = 60g
2T = 90g, T = 45g
R = T – 30g, R = 45g – 30g = 15g
R = 150N
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