applied mechanics distance up a slope

A 37kg object is placed onto a coil spring which has been compressed 43mm. The force used to compress the spring was 35KN.The spring and the object are on the same incline plane angled at 21deg from the horizontal.If the coef of friction is 0.37,how far will the block travel up the slope?

Working with tension to calculate the load on a rod and the work done in pulling it.

A rod 2.75m long, 30mm in diameter is put under stress of tension of 104 MPa. If "E" is 210 Gpa, find the a) Load on the rod b) Amount of tension c) Work done in pulling the rod

Find Force exerted

(see attachments) FYI: In this posting I will write A (sub x) as Ax. I will Write Sigma (or sum) as {E} Find the force exerted by pin A on the structure. I know that i first make the free body diagram. 1. Try the entire frame: IN second attachment, image on left. Problem...this is 4 unknowns, but we're only allowed 3 unknowns in a 2-D situation. The 4 are : Ax, Ay, Bx, By. The three eqns. available are {E}Fx=0 ; {E}Fy=0 ; {E}M=0 So, i decided that this won't work. 2. Try FBD of AD: the second attachment, image on right Again there are 4 unknowns, this time they are Ax, Ay, Cx, Cy...This won't work. However I think that I may... click for more