Grade 10 Physics · Strand 1: Mechanics and Thermal Physics · Energy, Work, Power and Machines
Wheel, Gears and Hydraulics
A short Grade 10 Physics lesson for the CBE curriculum, part of Mechanics and Thermal Physics: Energy, Work, Power and Machines. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.
1. A water well windlass has a handle that turns in a circle of radius 40 cm and an axle drum of radius 8 cm. What is the velocity ratio of the windlass?
Type your answer in the lesson.
2. Two gear wheels are meshed directly together. Which statement is correct?
- A. They rotate in opposite directions
- B. They rotate in the same direction
- C. They rotate in the same direction only if they have equal numbers of teeth
- D. They do not rotate unless an idler gear is placed between them
3. A cyclist in Eldoret selects a larger rear sprocket to climb a steep hill. What is the effect on the rear wheel?
- A. Turning torque increases and rotational speed decreases
- B. Turning torque decreases and rotational speed increases
- C. Both torque and speed increase
- D. Both torque and speed stay the same
4. Why does a hydraulic jack multiply force?
- A. Liquids compress easily when pushed
- B. The same liquid pressure acts over a much larger output piston area
- C. Friction in the pipes pushes the load upwards
- D. The liquid becomes lighter when it is pressurised
5. In a hydraulic press, the small piston has an area of 4 cm^2 and the large piston has an area of 200 cm^2. A force of 50 N is applied to the small piston. What force, in newtons, is produced on the large piston? Assume an ideal system.
Type your answer (in N) in the lesson.
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