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1.5.1a Forces, resultant force and motion

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Question 20

A student hangs a spring vertically from a support.

a.

Describe how the length of the suspended spring can be measured accurately.

[3]
b.

With no load, the spring is 15.0 cm long. With a load of 3.0 N on the end of the spring, its length is 19.5 cm. Calculate the extension of the spring.

[1]
c.

The load is pulled further down and then released. At a particular instant after it is released, the forces acting on the load are a downward gravitational force of 3.0 N and an upward force from the spring of 4.2 N. Calculate the magnitude of the resultant force acting on the load, and state its direction.

[2]
Markscheme

1.5.1a Forces, resultant force and motion Questions

  1. IGCSE
  2. /Physics
  3. /1.5.1a Forces, resultant force and motion

183 exam-style questions on CIE IGCSE Physics 1.5.1a Forces, resultant force and motion. Each one has a worked solution and a mark scheme showing where the marks go.

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