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A machine has an efficiency of 60%. If the machine is required to overcome a...

Physics
WAEC 1995

A machine has an efficiency of 60%. If the machine is required to overcome a load of 30 N with a force of 20 N calculate its mechanical advantage?

  • A. 0.7
  • B. 0.9
  • C. 1.5
  • D. 2.5
  • E. 10.0
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Correct Answer: Option C
Explanation

Mechanical Advantage = \(\frac{Load}{Effort}\)  but Load = 30N and Effort = 20N

M . A = \(\frac{30}{20}\) = 1.5

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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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Project Topics and Materials, Post-UTME past questions - Download now or upload yours to get paid
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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