Piston in a gasoline engine is in simple harmonic motion. the engine is running at the rate of 2 940 rev/min. taking the extremes of its position relative to its center point as ±5.50 cm.(a) find the magnitude of the maximum velocity of the piston. 16.93 correct: your answer is correct. m/s(b) find the magnitude of the maximum acceleration of the piston

The the magnitude of the maximum velocity and acceleration are 16.93 m/s and .

Explanation:

Given that,

Rate = 2940 rev/min

Amplitude = ±5.50 cm

(a). We need to calculate the magnitude of the maximum velocity

Using formula of maximum velocity

Where, A = amplitude

Put the value into the formula

(b). We need to calculate the maximum acceleration

Using formula of maximum acceleration

Hence, The the magnitude of the maximum velocity and acceleration are 16.93 m/s and .

most voltage drop calculators want the distance between the source and destination. then internally, they double it so both the source and return wires are calculated. but you need to know which distance the calculator uses so you're not half of what you should be or double what you should be.

most circuit breakers will not take a #6 directly, so the electrician will have to splice on a smaller pigtail. you also have to upsize the grounding wire when you upsized the ungrounded (hot) wire (see note in 250.122). this will preclude using most cable assemblies, as a cable with #6 copper will most likely only have a #10 grounding conductor. you need a #6 grounding conductor if the circuit is 20a. a #8 cable is no better, as it will have a #10 grounding conductor too. but most 20a breakers will take a #8 directly.

in your related post, you didn't say what type of load this is. if it is a light or heater, voltage drop won't be a big issue. if this is a motor, the current needs are huge at startup and the voltage drop can pose a problem. if this is a motor, knowing if the motor is under much load during startup will answer the voltage drop effect (a saw is easier to start than a compressor).

i don't understand. explain it clearly