29.01.2013 Views

Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Sec. 12] Fundamentals of Field Theory 291<br />

2384. Derive the formulas:<br />

a) rot(C a 1 l + C 2a = 2 ) C rota 1 l + C rota where , C f and C are<br />

2 t 2<br />

constants;<br />

b) rot(/c) = grad U-c, where c is a constant vector;<br />

c) rot (Ua) = grad U a + U rot a.<br />

2385. Evaluate the divergence and the rotation of the vector<br />

a if a is, respectively, equal to: a) r\ b) re and c) f(r)c, where c<br />

is a constant vector.<br />

2386. F<strong>in</strong>d the divergence and rotation of the field of l<strong>in</strong>ear<br />

velocities of the po<strong>in</strong>ts of a solid rotat<strong>in</strong>g counterclockwise with<br />

constant angular velocity o> about the z-axis.<br />

2387.' Evaluate the rotation of a field of l<strong>in</strong>ear velocities<br />

= co r of the po<strong>in</strong>ts of a body rotat<strong>in</strong>g with constant angular<br />

velocity

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!