Physics 5054/21 — May/June 2022
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
Topics Forces · Energy, Work and Power · Kinematics · Turning Effect of Forces · Thermal Properties of Matter · Reflection and Refraction of Light · +8 more
Fig. 1.1 shows a model of the human arm. The rubber band represents the muscle that moves part of the arm XY up.
A mass is suspended from XY, as shown in Fig. 1.2. The weight of section XY is negligible and the model is at rest.
State two ways in which the dimensions of the rubber band change as the mass is added to section XY.
State the form of energy stored in the stretched rubber band.
State the principle of moments.
Explain why the force that the rubber band exerts on section XY is larger than the weight of the mass.
The mass suspended from section XY in Fig. 1.2 has a weight of 4.0 N.
Calculate the force that the rubber band exerts on section XY.
force = ______
Explain how your answer to (b)(iii) is different if the weight of section XY is not negligible.
The rest of this paper
8 more questions- Q2Energy, Work and Power8M
- Q3Thermal Properties of Matter6M
- Q4Reflection and Refraction of Light8M
- Q5Magnetic Effect of a Current and the d.c. Motor · Kinematics7M
- Q6Electric Circuits7M
- Q7Kinematics · Physical Quantities and Measurement · Forces15M
- Q8Pressure · Kinetic Particle Model of Matter15M
- Q9The Nuclear Atom · Radioactivity · Stars and the Universe15M