Conservation of Energy--please help me!
Homework Statement
A block is pushed against the spring with spring constant 5.7 kN/m (located on the left-hand side of the track) and compresses the spring a distance 4.6 cm from its equilibrium position. The block starts at rest, is accelerated by the...
So would the equation for work be:
W= Fcost * x
Because I did that and I got the answer 18.156 J but that is also wrong! Do you understand what I'm doing wrong?
I tried to solve the problem before your response, and I got the same equation. I solved for F and got 34.307 N. Then I put that into the second equation to solve for W and got 52.832 J as my final answer. But this is still wrong (online submit)! I don't understand what I'm doing wrong.
Homework Statement
A 2.55 kg block is pushed 1.54 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 69.9 degrees with the horizontal. The acceleration of gravity is 9.8 m/s^2. If the coefficient of kinetic friction between the block and wall is...