Principles of moments - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2:

• 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 3:

• JAMB 1979

A uniform bean HK of length 10m and weighing 200N is supported at both ends as shown above. A man weighing 1000N stands at a point P on the beam. If the reactions at point H an K respectively are 800N and 400N, Then the distance HP is

A. 4m
B. 3.5m
C. 3m
D. \( 6 \frac{2}{3} \)m
E. 7m

Question 4:

• JAMB 1979

fig 10 shows a see-saw which is perfectly in balance, the weighs of the people sitting on it are 50kg, xkg and 15kg as shown, the sit at distances of 1.5, 1.5 and 2m from the pivot respectively. The vale of X is

A. 30
B. 35
C. 70
D. 24.25
E. Impossible to find

Question 5:

• JAMB 1980

In the diagram above, MN is perpendicular to ON and MR what is the difference between the moment about N of the force of 20 Newtons applied along MP an its moment about 0

A. Zero
B. 0.2N.m
C. 0.4N.m
D. 0.8N.m
E. 0.6N.m