What is the purpose of an idler gear in a gear system?

Which gear system from the two below would you recommend for a person who wants to ascend a steep slope with ease?. Explain the reasons for your choice.

Calculate the gear ratio of the gear system with a driven gear that has 105 teeth and a driver gear that has 15 teeth. Use the formula : Gear Ratio = Number of teeth on driven gear ÷ Number of gears on the driver gear

Give TWO examples where a crank mechanism is used.

Give TWO examples where a crank mechanism is used.

Give TWO examples where a crank mechanism is used.

A pair of scissors with the fulcrum in the middle of the blades and handles

A king post..

What effect does a shear force has on a structural members?

Single second-class levers is used to

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