An aerospace engineer is testing titanium calibration spheres and a suspension-spring load cell used to calibrate a low-gravity simulation rig.
The weight of a titanium sphere acts from a single point. What name is given to the point from which the weight of an object appears to act? Select the correct term:
The relationship between weight and mass for an object is given by:
weight∝mass \text{weight} \propto \text{mass} weight∝massWhich sentence describes this relationship?
The load cell is used to measure the mass of 5 identical titanium spheres. The total mass shown on the display is 1.25 kg1.25 \text{ kg}1.25 kg. Determine the mass of 1 titanium sphere.
Calculate the weight of 1 titanium sphere. Take the gravitational field strength as g=9.8 N/kgg = 9.8 \text{ N/kg}g=9.8 N/kg. Use the equation:
weight=mass×gravitational field strength \text{weight} = \text{mass} \times \text{gravitational field strength} weight=mass×gravitational field strengthThe load cell contains a steel spring inside. The spring has an unstretched length of 6.2 cm6.2 \text{ cm}6.2 cm. When a force of 7.5 N7.5 \text{ N}7.5 N acts on it, the length of the spring becomes 9.2 cm9.2 \text{ cm}9.2 cm. Calculate the extension of the spring in metres (m\text{m}m) when a force of 7.5 N7.5 \text{ N}7.5 N acts on it.
Calculate the spring constant of the spring. Use the equation:
spring constant=forceextension \text{spring constant} = \frac{\text{force}}{\text{extension}} spring constant=extensionforceWhat will happen to the spring when the 7.5 N7.5 \text{ N}7.5 N force is removed?
1 exam-style question on AQA GCSE Physics 5.1 Forces and their interactions, covering 5.1.1 Scalar and vector quantities, 5.1.2 Contact and non-contact forces, 5.1.3 Gravity, and 5.1.4 Resultant forces. Each one has a worked solution and a mark scheme showing where the marks go.