Friday

March 6, 2015

March 6, 2015

Posted by **Harold** on Monday, March 16, 2009 at 7:37pm.

I get 2.4J am I wrong, if so please help in showing hoe this process woorks out. It would be much appreciated.

- Physics -
**drwls**, Monday, March 16, 2009 at 11:51pmCompute the stored energy in the compressed spring. It is (1/2)k x^2 = 11.75 J. The work done againt friction going to the top of the incline is

W = 3.8N*cos 30*Uk*X = 3.70 J

The work done against gravity going to the top is

3.8N*s1n 30 * X = 4.28 J

The remaining kinetic energy is 3.77 J

Round it off to 3.8

**Answer this Question**

**Related Questions**

Physics - A 2 kg block has an initial velocity of 16 m/s at the bottom of the ...

physics - In the figure, a 4.3 kg block is accelerated from rest by a compressed...

physics - A solid block of mass m2 = 8.3 kg, at rest on a horizontal ...

help - A 2 kg block has an initial velocity of 16 m/s at the bottom of the ramp...

Physics - A 1.07 kg block slides across a horizontal surface directly toward a ...

physics - A block of mass m = 2.7 kg is released from rest at a height of H = 0....

Physics - A block of mass m = 5.2 kg is released from rest at a height of H = 4....

Physics - A 540 g block is released from rest at height h0 above a vertical ...

physics - A 1.79 kg block slides across a horizontal surface directly toward a ...

physics - A 4 kg block is pushed by an external force against a spring with ...