Search SchoolNGR

Sunday, 16 August 2026
Register . Login

Physics Past Questions and Answers

Topic: Simple Machines

Jamb Physics Questions - Simple Machines

Question 6:
An inclined plane which makes an angle of 30o with the horizontal has a velocity ratio of
  • A 2
  • B 1
  • C 0.866
  • D 0.50
View Answer & Explanation
Question 7:
A wheel and axle have radii 80cm and 10cm respectively. If the efficiency of the machine is 0.85, an applied force of 1200N to the wheel will raise a load of
  • A 8.0N
  • B 6.8N
  • C 8160N
  • D 9600N
View Answer & Explanation
Question 8:
A 20kg mass is to be pulled up a slope inclined at 30o to the horizontal. If the efficiency of the plane is 75%, the force required to pull the load up the plane is [g = 10ms-2]
  • A 13.3N
  • B 73.5N
  • C 133.3N
  • D 53.2N
View Answer & Explanation
Question 9:
A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the
  • A 80%
  • B 75%
  • C 50%
  • D 33%
View Answer & Explanation
Question 10:
A plane inclined at angle \(\theta\) has a velocity ratio of 10 : 1. The inclination of the plane to the horizontal is given by
  • A Tan\(\theta\) = \(\frac{1}{10}\)
  • B Cot\(\theta\) = \(\frac{1}{10}\)
  • C Cos\(\theta\) = \(\frac{1}{10}\)
  • D Sin\(\theta\) = \(\frac{1}{10}\)
View Answer & Explanation