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A lift is going up with an acceleration ...

A lift is going up with an acceleration 4g. A man is inside the lift and his mass is 'm'. What will be the reaction of the floor on the man?

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R=mg+4mg =5mg.
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MBD PUBLICATION-LINEAR MOMENTUM FORCE-QUESTION BANK
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  11. Express mathematically impulse.

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  13. How many laws of motion Newton devised?

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  14. Express mathematically relativistic mass.

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  15. What is the expression for rate of change of momentum?

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  16. Which law gives the quantitative definition of force?

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