danizincaze danizincaze
  • 19-05-2019
  • Physics
contestada

Calculate the work done to stretch an elastic string by 40cm if a force of 10N produces an extension of 4cm in it?

Respuesta :

MathPhys
MathPhys MathPhys
  • 19-05-2019

Answer:

40 J

Explanation:

Work = change in energy

W = 1/2 k (Δx)²

First we need to find the value of k.

F = kΔx

10 N = k (0.04 m)

k = 250 N/m

Solving for work

W = (250 N/m) (0.40 m)²

W = 40 J

Answer Link

Otras preguntas

What are US firms at the forefront of?
which inequality is shown above
What are the 3 factors of production?
(a) 13(c) Mnumbers 15, 10, 20, 25, 18,(b) 10.70(d) 11.50a variable assumes the values 1, 2, 3, ... 8 with1,2,3,... 8, then what is the AM?(a) 11/3(b) 5(c) 4(d)
A) Complete with Past simple or Past continuous 1. I ________________________(sit) in a bar when you ___________________________ (call) 2. When you ____________
The length of rectungular field is 50m and its breadth is 40m. calculate its area in acre and hectare​
(-2,-3), y=2x-1 write the equation in slope intercecpt form
Answer only if you had/have braces how long did it take to notice change with your braces on
what is a chemical property of a substance a; color b; reactivity c; melting point d; density
Find the slope of the line that passes through (10,9) and (5,11)​