Which of the following is contained in a pull start lawnmower?

a pulley and a wheel and axle

a wheel and axle and an inclined plane

a pulley and a wedge

a wheel and axle and a block and tackle

The correct answer is a pulley and a wheel and axle.

Explanation:

Pull start lawnmowers usually have a traction mechanism designed to turn on the axle of the crankshaft and start the lawnmower engine. Also known as a recoil starter, the traction mechanism consists of a few different parts that work together to allow the user to start the mower engine.

The casing contains the pulley, starter cord, and rewind spring, all of which work together to form the mower's traction mechanism.

The wheels allow the machine to be moved on the ground.

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waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s