Shown on the top is large block 24 cm wide, 18 cm long, and 3.0 cm high. This bl

Question

Shown on the top is large block 24 cm wide, 18 cm long, and 3.0 cm high. This block is passing through air (density %u03C1 = 1.43 kg/m3) at a speed of v = 8.28 m/s. Find the drag force Fd acting on the block if it is traveling in the direction illustrated with the velocity vector v1 with a drag coefficient %u0393 = 0.882.

______ N

Find the drag force acting on the block if it is traveling in the direction illustrated with the velocity vector v2 with a drag coefficient %u0393 = 0.970.

______ N

Find the drag force acting on the block if it is traveling in the direction illustrated with the velocity vector v3 with a drag coefficient %u0393 = 1.15.

_______ N

What would be the steps required to figure out this problem and what would be the solution? Thanks.

Explanation / Answer

a) Fd =0.5^ v1^2*drag coeffecient*density*A = 0.5*8.28*8.28*.882* (0.03*0.24) *1.43 = 0.3112918833024 N

b) Fd = 0.5^ v2^2*drag coeffecient*density*A =0.5* 8.28*8.28*.97 * (0.18*0.03) *1.43 = 0.256762862928 N

c) Fd = 0.5^ v3^2*drag coeffecient*density*A = 0.5*8.28*8.28*1.15* (0.18*0.24) *1.43 = 2.43527663808 N

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