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March 3, 2015

March 3, 2015

Posted by **help** on Sunday, December 14, 2008 at 8:26pm.

Assume that the stopping point is reached.

(a) What is the position of the block?

m

(b) What is the work that has been done on the block by the applied force?

J

(c) What is the work that has been done on the block by the spring force?

J

During the block's displacement, find the following values.

(d) The block's position when its kinetic energy is maximum.

m

(e) The value of that maximum kinetic energy.

mJ

- physics -
**Damon**, Sunday, December 14, 2008 at 9:20pmF = k x so x = F/k

Work done by force = U stored in spring = (1/2) k x^2

Work done by spring = -(1/2) k x^2

you let thew block go for d I assume

then the minimum U is when x = 0 and that is the maximum speed and kinetic Energy

Max KE = U at max stretch x = (1/2) k x^2

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