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  1. Class 9
  2. Chapter 11 Class 9 - Work and Energy

Transcript

Extra Questions 1 An engine does 54,000 J work by exerting a force of 6000 N on it. What is the displacement by the force. Force = 6000 N Work done = 54000 J We know that Work done = Force × Displacement 54000 = 6000 × Displacement 54000/6000 = Displacement Displacement = 54000/6000 Displacement = 54/6 Displacement = 9 m Displacement is 9 m Displacement = 9 m Displacement is 9 m

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CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.