Question 431:

• JAMB 1986

In fig 3, three forces F1, F2, and F3 acting at O are in equilibrium. If the magnitude of F1 is 10N,and the magnitude of F2 is 5N, find the magnitude of F3

A. 26.4N
B. 15.0N
C. 13.2N
D. 10.0N

Question 432:

• JAMB 1986

A uniform meter rule QR is balanced on a knife edge which is 55cm from R, when a mass of 10g is hung at P as shown above, the mass of the meter rule is

A. 550g
B. 350g
C. 70g
D. 35g

Question 433:

• JAMB 1987

Which of the following units is equivalent to kgms^-1?

A. Ns^-1
B. Nms^-1
C. Ns
D. Js^-1

Question 434:

• JAMB 1987

Which of the following units is equivalent to kgms^-1?

A. Ns^-1
B. Nms^-1
C. Ns
D. Js^-1

Question 435:

• JAMB 1987

A jet engine develops a thrust of 270Ns when the velocity of the exhaust gases relative to the engine is 300ms^-1. What is the mass of the material ejected per second?

A. 81.00kg
B. 9.00kg
C. 0.90kg
D. 0.09kg