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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Mass

Jamb Physics Questions - Mass

Question 21:
Two masses 40g and 60g respectively, are attached firmly to the ends of the light meter rule. The center of gravity of the system is
  • A At the mid-point of the meter rule
  • B 40cm from the lighter mass
  • C 40cm from the heavier mass
  • D 60cm from the heavier mass
  • E Indeterninate because the meter-rule is light
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Question 22:
Two objects, one having three times the mass of the other, are dropped at the same time from a tall building. When they are above the ground, the two objects will have the same
  • A Momentum
  • B Kinetic energy
  • C Potential energy
  • D Acceleration
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Question 23:
the fig above shows two connected bodies of masses M1 and M2 in equilibrium under gravity. The tension in the upper string is
  • A (m1-m2)g
  • B M1g
  • C M2g
  • D (m1+m2)g
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Question 24:
A force, 10N, drags a mass 10kg on a horizontal table with an acceleration of 0.2ms[/sup]. If the acceleration due to gravity is 10ms[sup]-1, the coefficient of friction between the moving mass and the table is
  • A 0.02
  • B 0.08
  • C 0.20
  • D 0.80
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Question 25:
Two strings of the same length and under the same tension gives notes of frequencies in the ratio 4 : 1. The masses of the strings are in the corresponding ratio of
  • A 2 : 1
  • B 1 : 2
  • C 1 : 4
  • D 1 : 16
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