pavitra brought some books for rs60. had she bought 5 more books for the same amount each book would have cost 1 rs less find the no of books bought by pavitra and pays off each book
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Step-by-step explanation:
A person of mass 65 kg is standing on the floor of a lift of mass 835 kg. The lift is descending with acceleration a mis? . The tension in the lift cable is 8550 N
(a) Calculate the value of a.
(b) Find the reaction of the floor on the person.
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