A force of 10N causes a spring to extend by 20mm?

👨🏻‍🏫 學術台物理學

[匿名]

2016-02-10 3:54 pm

Find
A. The spring constant of the spring in N/m
B. The extension of the spring when 25N is applied
C. The force applied that causes an hour extension of 5mm

更新1:

c. the force applied that causes extension of 5mm

回答 (2)

oubaas

2016-02-10 5:32 pm

A force of 10N causes a spring to extend by 20mm . Find :

A. The spring constant of the spring in N/m
k = F/x = 10*1000/20 = 500 N/m

B. The extension of the spring when 25N is applied
x = F/k = 25/500 = 50/1000 = 0.050 m (50 mm)

C. The force applied that causes an extension of 5mm
F = k*x = 500*0.005 = 2500/1000 = 2.5 N

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[匿名]

2016-02-10 3:58 pm

for A and B use the equation F=kx
F = force applied in N
k = spring constant
x = extension in Meters

for B use the same spring constant and calculate the extension(x) because it is the same spring and spring constant does not change for a given spring.

I have no idea on C, sorry

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