1.5. Forces
A subsection of Physics, 0625, through 1. Motion, forces and energy
Listing 10 of 543 questions
A helical spring is hung from the edge of a bench top, as shown in . 29.8 cm bench top 62.8 cm spring pin metre rule load = 5.5 N Before the load is hung on the spring, the pin points to the 29.8 cm mark on the metre rule. When a load of 5.5 N is hung on the spring, the pin points to 62.8 cm. Calculate the extension of the spring. extension = cm The law relating extension to load is given by the equation load = constant × extension. Calculate the numerical value of the constant. constant = Suggest a suitable unit for the constant.
0625_s10_qp_21
THEORY
2010
Paper 2, Variant 1
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Four students, A, B, C and D, each have a spring. They measure the lengths of their springs when the springs are stretched by different loads. Their results are shown in . student A student B student C student D load / N spring length / cm spring length / cm spring length / cm spring length / cm 0.5 6.7 9.2 9.1 10.0 1.0 7.7 10.0 9.9 11.1 1.5 8.7 10.8 10.7 12.2 2.0 9.7 11.6 11.5 13.3 2.5 10.7 12.6 12.3 14.4 3.0 11.7 13.8 13.1 15.5 3.5 12.7 15.2 13.9 16.6 4.0 13.7 16.8 14.7 17.7 State which student had loaded the spring beyond the limit of proportionality. Explain how you obtained your answer to . For the spring used by student A, calculate the extra extension caused by each additional 0.5 N, extra extension = the unloaded length of the spring. unloaded length = Student A obtains a second spring that is identical to his first spring. He hangs the two springs side by side, as shown in . identical springs load Use the table to calculate the length of each of the springs when a load of 2.5 N is hung as shown in . Show your working. length =
0625_s10_qp_32
THEORY
2010
Paper 3, Variant 2
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Four students, A, B, C and D, each have a spring. They measure the lengths of their springs when the springs are stretched by different loads. Their results are shown in . student A student B student C student D load / N spring length / cm spring length / cm spring length / cm spring length / cm 0.5 6.7 9.2 9.1 10.0 1.0 7.7 10.0 9.9 11.1 1.5 8.7 10.8 10.7 12.2 2.0 9.7 11.6 11.5 13.3 2.5 10.7 12.6 12.3 14.4 3.0 11.7 13.8 13.1 15.5 3.5 12.7 15.2 13.9 16.6 4.0 13.7 16.8 14.7 17.7 State which student had loaded the spring beyond the limit of proportionality. Explain how you obtained your answer to . For the spring used by student A, calculate the extra extension caused by each additional 0.5 N, extra extension = the unloaded length of the spring. unloaded length = Student A obtains a second spring that is identical to his first spring. He hangs the two springs side by side, as shown in . identical springs load Use the table to calculate the length of each of the springs when a load of 2.5 N is hung as shown in . Show your working. length =
0625_s10_qp_33
THEORY
2010
Paper 3, Variant 3
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A spring is hung from a support. A load, hung on the spring, makes it extend. Describe how you would use a ruler to measure the extension. The lengths of the spring are found for loads of various weights. From these lengths, the extensions are calculated. Most of the results are shown in the table below. load / N length / mm extension / mm 1.0 2.0 3.0 4.0 5.0 6.0 Calculate the two missing values and insert them in the table. On , plot the values of extension against load, but do not draw the line yet. load / N extension / mm A mistake was made with one of the length values. State the value of the length that is incorrect. Ignoring the value in , draw the best-fit straight line through your points and the origin. Complete the following sentences. Within the limits of the experiment, when the load doubles, the extension of the spring . The straight-line graph through the origin shows that the extension and the load are .
0625_s13_qp_22
THEORY
2013
Paper 2, Variant 2
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shows a spring before and after a load is added. load spring What is meant by the extension of the spring? When the graph of extension against load is drawn for the spring, the result is the line shown in . extension / cm load / N The unstretched length of the spring is 9.0 cm. 1. Calculate the total length of the spring when a 5.0 N load is hanging from the spring. length = cm 2. Find the extension that will be caused by a load of 2.0 N. extension = cm Calculate the mass of a load of weight 2.0 N. mass =
0625_s14_qp_21
THEORY
2014
Paper 2, Variant 1
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A spring is attached to the underside of the edge of a bench. A metre rule is fixed next to it, as shown in . X bench top pin metre rule Y spring load L When there is no load on the spring, the marker pin is at X. When a load of weight L is hanging on the spring, the marker pin is at Y, as shown in . Describe how you would determine the value of the extension of the spring caused by the load. On , sketch the graph you would expect to be able to obtain as the spring is gradually stretched from X to Y. length X Y load L
0625_s14_qp_23
THEORY
2014
Paper 2, Variant 3
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Questions Discovered
543