Tuesday

September 23, 2014

September 23, 2014

Posted by **Physics Guy** on Sunday, November 2, 2008 at 10:23pm.

Here's what I have so far:

INITIAL HEIGHT = 20 meters

FINAL HEIGHT = 10 meters

MASS = 5 kilograms

ACCELERATION = 9.8 meters per second squared

INITIAL VELOCITY = 10 meters per second

SPRING CONSTANT = 50 Newtons per meter

ENERGY OF GRAVITY = mgh

KINETIC ENERGY = 0.5mv^2

SPRING ENERGY = 0.5kx^2

TOTAL ENERGY = The sum of those 3 energies

I need to find the final velocity and then how much the spring gets compressed. Then I have to find the speed of the object when the compression of the spring is 0.2 meters.

- ! P H Y S I C S ! -
**drwls**, Sunday, November 2, 2008 at 11:17pmThe spring in compressed until the initial sum of kinetic and potential energy equals the final stored energy in the spring, MINUS the decrease in PE during compression.

Let x be the maximum compression

(1/2) M Vo^2 + M g H = (1/2) kx^2 - M g x

Solve for maximum x deflection. When the spring is compressed x = 0.2 m, you can energy conservation to solve for v

(1/2) M Vo^2 + M g H = (1/2) kx^2 - M g x + (1/2) M v^2

**Answer this Question**

**Related Questions**

Physics - A 5 kg mass is thrown up with a velocity of 4 m/s from a height of 30 ...

Physics - A 5 kg mass is thrown up with a velocity of 4 m/s from a height of 30 ...

programming - Write a top down program to calculate the velocity and the height ...

physics - a mass is thrown vertically upwards with an initial velocity of 30m/s...

physics please help!!!!!! - a mass is thrown vertically upwards with an initial...

physics - An object with mass of 7kg was thrown down with initial velocity 10m/s...

physics - A ball is thrown upward in such a way that its speed is 32.3 m/s when ...

civil engineering - A stone (on the edge of the roof) thrown from the top of a ...

Physics - Hello, I don't understand how to do part "d" of the question. Can ...

calculus 2 - An object thrown in the air on a planet in a distant galaxy is at ...