Question

Suppose that 5 J of work is needed to stretch a spring from its natural length of 30 cm to a length of 41 cm.

(a) How much work is needed to stretch the spring from 35 cm to 37 cm? (Round your answer to two decimal places.)

(b) How far beyond its natural length will a force of 25 N keep the spring stretched? (Round your answer one decimal place.)

Answer #1

Suppose that 3 J of work is needed to stretch a spring from its
natural length of 28 cm to a length of 37 cm.
(a) How much work is needed to stretch the spring from 30 cm to
35 cm? (Round your answer to two decimal places.)
J
(b) How far beyond its natural length will a force of 30 N keep the
spring stretched? (Round your answer one decimal place.)
cm

Suppose that 3 J of work is needed to stretch a spring from its
natural length of 36 cm to a length of 53 cm.
(a) How much work is needed to stretch the spring from 41 cm to
45 cm? (Round your answer to two decimal places.)
_____ J
(b) How far beyond its natural length will a force of 30 N keep the
spring stretched? (Round your answer one decimal place.)
_____ cm

Suppose that 6 J of work is needed to stretch a spring from its
natural length of 32 cm to a length of 40 cm.
(a) How much work is needed to stretch the spring from 36 cm to
38 cm? (Round your answer to two decimal places.)
J
(b) How far beyond its natural length will a force of 35 N keep the
spring stretched? (Round your answer one decimal place.)

Suppose that 6 J of work is needed to stretch a spring from its
natural length of 26 cm to a length of 40 cm.? (a) How much work is
needed to stretch the spring from 31 cm to 35 cm? (Round your
answer to two decimal places.) _____ J(b) How far beyond its
natural length will a force of 30 N keep the spring stretched?
(Round your answer one decimal place.) _____ cm

Suppose that 5 J of work is needed to stretch a spring from its
natural length of 28 cm to a length of 48 cm.
(a) How much work is needed to stretch the spring from 32 cm to
40 cm? (Round your answer to two decimal places.)
J
(b) How far beyond its natural length will a force of 15 N keep the
spring stretched? (Round your answer one decimal place.)
cm

Suppose that 2 Joules of work is needed to stretch a spring from
its natural length of 40 cm to a length of 61 cm. How much work is
needed to stretch it from 54 cm to 65 cm? Your answer must include
the correct units.

A spring has a natural length of 14 cm. If a 30-N force is
required to keep it stretched to a length of 26 cm, how much work
W is required to stretch it from 14 cm to 20 cm? (Round
your answer to two decimal places.)

A spring has a natural length of 30 cm. If a 20-N force is
required to keep it stretched to a length of 46 cm, how much work
W is required to stretch it from 30 cm to 38 cm? (Round
your answer to two decimal places.)
W =

If 24 J of work are needed to stretch a spring from 13 cm to 17
cm and 40 J are needed to stretch it from 17 cm to 21 cm, what is
the natural length of the spring?

If 27 J of work are needed to stretch a spring from 10 cm to 16
cm and 45 J are needed to stretch it from 16 cm to 22 cm, what is
the natural length of the spring?
please explain the work

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