Equilibrium of Forces - Jamb Physics Past Questions and Answers

Question 56:

• JAMB 2019

The diagram shows a uniform meter rule AB which balances horizontally at the 90cm mark when a mass of 0.2kg is suspended from B. Calculate the mass of the meter rule.

A. 0.05kg
B. 0.20kg
C. 0.80kg
D. 1.00kg

Question 57:

• JAMB 2019

A cone is in unstable equilibrium has its potential energy

A. Decreased
B. Increased
C. Unchanged
D. Oscillating

Question 58:

• JAMB 2019

A body was slightly displaced from its equilibrium position. Which one of the following is a condition for its stable equilibrium

A. An increase in the kinetic energy of the body
B. An increase in the potential energy of the body
C. An increase in the potential energy of the body
D. An increase in the height of the body

Question 59:

• JAMB 2020

Consider the three forces acting at O and in equilibrium as shown in the figure. Which of the following equations is/are CORRECT?
I. P\(_1\) cos \(\theta_1\) = p\(_1\) cos \(\theta_2\)
II. P\(_3\) = P\(_1\) cos \(\theta_4\) + P\(_2 cos_2\)
III. P\(_1 \sin \theta_1 = P_2 \sin \theta_2\)

A. I only
B. II only
C. III only
D. I, II and III only