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Forces, movement, shape and momentum

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Question 59
a.

A researcher measures the weight of a solid bronze specimen as 117.6 N117.6\text{ N}117.6 N.

(i) Name a piece of equipment they could use to measure this weight.

(ii) State the equation relating weight, mass, and gravitational field strength (ggg).

(iii) Calculate the mass of the bronze specimen. (Take g=9.8 N/kgg = 9.8\text{ N/kg}g=9.8 N/kg)

[4]
b.

Describe how the researcher could determine the density of this bronze specimen. You should include details of any further measurements they would need to make.

[3]
c.

The specimen is fired horizontally to the right from a spring-loaded launcher mounted on a wheeled platform, as shown in the diagram below.

Diagram showing a spring-loaded launcher on a mobile platform. The platform moves to the left as the projectile is fired to the right.

Using principles of momentum, explain why the platform moves in the opposite direction to the projectile.

[3]

Forces, movement, shape and momentum Questions

  1. IGCSE
  2. /Physics
  3. /Forces, movement, shape and momentum