Hooke's law - 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 1981

The extension in a spring when 5g wt was hung from it was 0.56cm. If Hooke's law is obeyed, What is the extension caused by a load of 20g wt?

A. 1.12m
B. 2.14cm
C. 2.52cm
D. 2.80cm
E. 2.24cm

Question 3:

• JAMB 1983

The total length of a spring when a mass of 20g is hung from its end is 14cm, while its total length is 16cm when a mass of 30g is hung from the same end. Calculate the unstretched length of the spring assuming Hooke's law is obeyed.

A. 9.33cm
B. 10.00cm
C. 10.66cm
D. 12.00cm
E. 15.00cm

Question 4:

• JAMB 1987

A load of 5N gives an extension of 0.56cm in a wire which obeys Hooke's law. What is the extension caused by a load of 20N?

A. 1.12cm
B. 2.14cm
C. 2.24cm
D. 2.52cm

Question 5:

• JAMB 1991

The spiral spring of a spring balance is 25.0cm long when 5N hangs on it and 30cm long, when the weight is 10N. What is the length of the spring if the weight is 3N assuming Hooke's law is obeyed?

A. 15.0cm
B. 17.0cm
C. 20.0cm
D. 23.0cm