CBSE Class 9 Answered
A box has a mass of 5.8 kg . the box is lifted from the garage floor and placed ona shelf , if the box gain 145J of potential energy . how high is the shelf? can you plz tell me how to find"g " in such type of question?
Asked by swatipuspapatel | 23 Dec, 2020, 04:13: PM
Expert Answer
g is acceleration due to gravity and it is constant , is value is g = 9.8 m/s2
Potential energy = m × g × h = 5.8 × 9.8 × h = 145 J
heice height os shelf h = 145 /(5.8 × 9.8 ) = 2.55 m
Answered by Thiyagarajan K | 23 Dec, 2020, 05:01: PM
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