Respuesta :
<Continuation of the question>
(a) the spring constant (in N/m) and
(b) the weight of the block hanging from the third spring.
the distance for the first spring is 20cm, the second 35cm, the third 50cm.
Answer:
a) To find the spring constant, we'll use the formula
F=kx, if we make k the subject we'll get
k=F/x, where F=4.5N, x = 35cm - 20cm = 15cm = 0.15m
k=F/x = 4.5N/0.15m = 30N/m is the Answer
b) to find the weight of block hanging on third spring
we use the formula F=kx
where k = 30N/m, x=50cm-20cm=30cm=0.30m
F=kx = (30N/m)*(0.30m) = 9N is the Answer
The spring constant and the weight hanging on the third spring are respectively; k = 30 N/m and F = 9N
What is the spring constant?
A) Formula for force in a spring is;
F = kx
where;
k is spring constant
x is displacement
we are given;
F = 4.5N
x = 35cm - 20cm = 15cm = 0.15m
Thus;
k = F/x = 4.5/0.15
k = 30N/m
B) To get the weight of block hanging on third spring, we will use the formula; F=kx
where;
k = 30N/m
x = 50 cm - 20 cm = 30cm = 0.30m
Thus;
F = 30N/m × 0.30m
F = 9N
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