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A pendulum makes 36 vibrations in exactly 60 s. What is
Chapter 5, Problem 28P(choose chapter or problem)
Problem 28P
A pendulum makes 36 vibrations in exactly 60 s. What is its (a) period, and (b) frequency?
Questions & Answers
QUESTION:
Problem 28P
A pendulum makes 36 vibrations in exactly 60 s. What is its (a) period, and (b) frequency?
ANSWER:
SolutionStep 1Equation for Maximum theoretical efficiency Equation for maximum theoretical efficiency is, = Work done by the heat engine (output)/ amount of heat extracted from hot reservoir (input) Or, = W / Q H The work done by the heat engine is, W = Q - Q H C Where, Q - AmCnt of heat exhausted to the cold reservoir Therefore, the efficiency, = (Q - Q )HQ =C - (H / Q ) C H We can rewrite it in terms of temperature as, = 1 - (T / T ) -C---H---- (1) Where, T - tC erature of cold reservoir and T - temperatuH of hot reservoir