Homework Help: physics

Posted by Ashley on Tuesday, December 1, 2009 at 6:01pm.

U(J)

6 |
|
4 |
\ |
2 \ ______/
\ /
\_____/
0 1 3 5 7 8 x(cm)

Best I could do in drawing a graph!!

A 10 g particle has the potential energy shown in the figure above.

Part A: How much work does the force do as the particle moves from 2 cm to 6 cm?

W = ? J

Part B: What speed does the particle need at x = 2cm to arrive at x = 6m with a speed of 10 m/s ?

v = ? m/s

Can anyone help with the formulas?

physics - Ashley, Tuesday, December 1, 2009 at 6:08pm
Sorry about the graph. Since the graph did not post properly, here is explanation of the graph. I really need help!!

The y axis is for U(J) and the x axis is in cm. There is a diagonal line from 4 J down to 1 cm and levels out on the x axis to 3 cm and rises again to height of 2 J at 5cm and levels out to 7 cm and rises to 6 J at 8cm.

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