please give me the answer of 24th 26th and 27th question
gurnoor kaur , 6 Years ago
Grade 9
Mechanics> please give me the answer of 24 th 26 th ...
1 Answers
Venkat
Last Activity: 6 Years ago
Only one per post. Answering 27th.
The work done is stored as Potential Eenergy in the spring. It is given by
W = ½ * k(x22 - x12)
x1 = 5 cm
x2 = 15 cm
Force constant, k = 800 N/m = 8 N/cm
W = ½ * 8(152 - 52) = ½ * 8(225 - 25)
W = 800 N cm = 8 N m = 8 J
The correct option is B
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