Search SchoolNGR

Sunday, 16 August 2026
Register . Login

Physics Past Questions and Answers

Topic: Mass

Jamb Physics Questions - Mass

Question 31:
A uniform rod PQ of length 1m and mass 2kg is pivoted at the end p. If load of 14N is placed at the center of the rod, find the force that should be applied vertically upwards at Q to maintain the rod at equilibrium horizontally [g = 10ms-2]
  • A 68N
  • B 28N
  • C 17N
  • D 7N
View Answer & Explanation
Question 32:
A uniform meter rule weighing 0.5N is to be pivoted on a knife-edge at the 30cm-mark. where will a force of 2N be placed from the pivot to balance the meter rule?
  • A 95cm
  • B 25cm
  • C 20cm
  • D 5cm
View Answer & Explanation
Question 33:
Two bodies have masses in the ratio 3:1. They experience forces which impart to them acceleration in the ratio 2:9 respectively. Find the ratio of forces the masses experienced.
  • A 1 : 4
  • B 2 : 1
  • C 2 : 3
  • D 2 : 5
View Answer & Explanation
Question 34:
The figure above represents a frictionless pulley system in which a weight W is in equilibrium with a weight of 40N. Find the value of W
  • A 13.3N
  • B 20.0N
  • C 40.0N
  • D 80.0N
View Answer & Explanation
Question 35:
the ratio of electrostatic force FE to gravitational force FG between two protons each of charge e and mass m, at a distance d is
  • A E/4πԐoGm
  • B E<sup style='font-size: smaller;'>2</sup>/Gm<sup style='font-size: smaller;'>2</sup>
  • C Gm<sup style='font-size: smaller;'>2</sup>/4πԐoe<sup style='font-size: smaller;'>2</sup>
  • D E<sup style='font-size: smaller;'>2</sup>/4πԐoeGm<sup style='font-size: smaller;'>2</sup>
View Answer & Explanation