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Monday, 17 August 2026
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Physics Past Questions and Answers

Topic: Simple Machines

Jamb Physics Questions - Simple Machines

Question 41:

The figure above 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 machine is 40\(^o\), then the value of W is
  • A 28.0N
  • B 48.0N
  • C 288.0N
  • D 50.0N
View Answer & Explanation
Question 42:
Which of these is a second-class lever?
  • A Sugar tongs
  • B Claw hammer
  • C Plier
  • D Wheelbarrow
View Answer & Explanation
Question 43:
A 200 kg load is raised using a 110 m long lever as shown in the diagram above. The load is 10m from the pivot P. If the efficiency of the the lever is 80%, find the effort E required to lift the load.

[Take g = 10ms-2]
  • A 250
  • B 300
  • C 450
  • D 200
View Answer & Explanation