d = 53 + 53/5 = 63.6 m.
T = d/r = 63.6/5 = 12.72 s.
a person was climbing on a building.he slips 1 metre for every 5 metre he climb up. if the building is 53 metre high and he takes 5 seconds to climb 1 metre,find the total time taken by him to get on the top of the building.
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