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A person is standing in an elevator. In ...

A person is standing in an elevator. In which situation he finds his weight less?

A

when the elevator moves upward with constant acceleration

B

when the elevator moves downward with uniform velocity

C

when the elevator moves downward with uniform velocity

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
As elevator accelerates down, pseudo force acts upward.
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ALLEN-NEWTONS LAWS OF MOTION-EXERCISE-I
  1. A horizontal force 10 N is necessary to just hold a block stationary a...

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  2. In the figure given, the position-time graph of a particle of mass 0.1...

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  3. A person is standing in an elevator. In which situation he finds his w...

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  4. Two weights w(1) and w(2) are suspended from the ends of a light strin...

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  5. A particle is moving under the influence of a force which is fixed in ...

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  6. A force of 10 Newton acts on a body of mass 20 kg for 10 seconds. Cha...

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  7. A rocket of mass 1000 kg is to be projected vertically upwards. The ga...

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  8. Three blocks of messes m1,m2 and m3 are connected to a massless star...

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  9. A 0.5 kg ball moving with a speed of 12 m/s strikes a hard wall at an ...

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  10. A person used force( F). Shown in figure to move a load with constant ...

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  11. The ratio of gravitational mass to inertial mass is equal to:

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  12. A given object takes n times more time to slide down a 45^(@) rough i...

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  13. The figure shows a horizontal force vecF acting on a block of mass M o...

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  14. A 150 g tenins ball coming at a speed of 40m/s is hit straight back by...

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  15. Three blocks of masses m(1), m(2) and m(3) kg are placed in contact wi...

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  16. Two block of masses M(1) and M(2) are connected with a string passing...

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  17. Three masses M(1), M(2) and M(3) are lying on a frictionless table. Th...

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  18. In Newton's second vecF=mveca (for constant mass m), veca is the accel...

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  19. A man of mass 90 kg is standing in an elevator whose cable broke sudde...

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  20. A force F=(6hati-9hatj+10hatk) N produces an accelertion of 1 m^(-2) i...

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