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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Simple Machines

Jamb Physics Questions - Simple Machines

Question 1:
An inclined plane of angle \(\theta\), acting as a simple machine, has a velocity ratio
  • A Sin\(\theta\)
  • B \(\frac{1}{\text{sin}\theta}\)
  • C Cos\(\theta\)
  • D \(\frac{1}{\text{cos}\theta}\)
  • E Sin\(\theta cos\theta\)
View Answer & Explanation
Question 2:
A machine has a velocity ratio of 5. It requires a 50kg weight to overcome a 200kg weight. The efficiency is
  • A 4%
  • B 5%
  • C 40%
  • D 50%
  • E 80%
View Answer & Explanation
Question 3:
A plane inclined at an angle of 30o to the horizontal has an efficiency of 60%. The force parallel to the plane required to push a load of 120N uniformly up the plane is
  • A 60N
  • B 100N
  • C 120N
  • D 200N
  • E 240N
View Answer & Explanation
Question 4:
fig 4 represents a block-and-tackle pulley system on which an effort of W newtons supports a load of 120.0N if the efficiency of the system is 40% then the value of W is
  • A 28.0N
  • B 48.0N
  • C 50.0N
  • D 288.0N
View Answer & Explanation
Question 5:
The mechanical advantage(MA) of an inclined plane depends on
  • A Its length
  • B Its height
  • C The product of its length and height
  • D The ratio of its length to its height
View Answer & Explanation