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3 years ago

Student pushes a 50 N block across the floor for a distance of 15 m how much work was done to move the block

Physics

1 answer:

Talja [164]3 years ago

7 0

Answer:

750 J

Explanation:

We have a student that pushes a 50N block across the floor for a distance of 15m. The question is asking how much work was done to move the block.

To solve this, we must know that we are looking for a certain thing called joules. And to get the answer, we must follow the formula of W = FS

F being the force and S being the distance.

W = FS

W = (50)(15)

W = 750

Therefore, 750 joules is our answer.

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A 5 cm spring is suspended with a mass of 3.8589 g attached to it which extends the spring by 1.5747 cm. The same spring is plac

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Answer:

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Explanation:

given data

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spring length = 5 cm = 0.05 m

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spring's extension = 0.0116 m

to find out

charges of the beads

solution

we know that force is

force = mass × g

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force = 0.03782 N

so we know force for mass

force = -kx

so k = force / x

put here force and x value

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and

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force = -kx

force = -0.24 ( 0.0116) = 0.002784 N

so here

total length L = 0.05 + 0.0116 = 0.0616

so charges of the beads = force × L² / ke

charges of the beads = 0.002784 × (0.0616)² / (9 × $10^{9}$ )

so charges of the beads = 1.173 × $10^{-15}$ C

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Student pushes a 50 N block across the floor for a distance of 15 m how much work was done to move the block￼

Student pushes a 50 N block across the floor for a distance of 15 m how much work was done to move the block