K.C.S.E Physics Q & A - MODEL 2017PP1QN15

K.C.S.E Physics Q & A - MODEL 2017PP1QN15

​(a) A student was provided with several identical masses, a metre rule, a spring and a stand,
boss and clamp. Outline five steps that the student should follow in order to verify Hooke’s law. 
(b) Figure 4 shows a graph that was drawn from the results obtained in an experiment to study the extension of a spring.

From the graph determine;
(i) The spring constant K,
(ii) The load that causes an extension of 3 X 10^-2 m.
(c) Three identical springs of spring constant 100 Nm^-1 are arranged as shown in Figure 5 to support a 5 N load.

Determine the total extension in the arrangement.

answers

​(a) Hung the spring on the stand and note the position of the pointer using the metre rule.
 Suspend a mass o the spring and note the new position of the pointer.
 Increase the load in steps and record the position of the pointer for each load.
 Draw a table of weight against extension.
 Plot a graph of force against extension