Question

37 The finger exerciser is formed by winding A227 hard drawn steel wire to obtain 2.5 turns (when the grip is in the closed position). E = 28.5 Mpsi, G= 17.8 Mpsi. The mean coil diameter is 1.25 inch. The torsional stiffness of the spring is (lb.in./turn) is: No. 8 gauge (0.162 in) wire Wire clip Molded plastic handle 3 in 4 \frac{1}{4} in 3 \frac{3}{4} in O a. 545 O b. None of the above O c. 1030 O d. 515 O e. 582

          37
The finger exerciser is formed by winding A227 hard drawn steel wire to obtain 2.5 turns (when the grip is in the closed position). E = 28.5 Mpsi,
G= 17.8 Mpsi. The mean coil diameter is 1.25 inch. The torsional stiffness of the spring is (lb.in./turn) is:
No. 8 gauge
(0.162 in) wire
Wire clip
Molded
plastic
handle
3 in
4 \frac{1}{4} in
3 \frac{3}{4} in
O a. 545
O b. None of the above
O c. 1030
O d. 515
O e. 582

37
The finger exerciser is formed by winding A227 hard drawn steel wire to obtain 2.5 turns (when the grip is in the closed position). E = 28.5 Mpsi,
G= 17.8 Mpsi. The mean coil diameter is 1.25 inch. The torsional stiffness of the spring is (lb.in./turn) is:
No. 8 gauge
(0.162 in) wire
Wire clip
Molded
plastic
handle
3 in
4 (1)/(4) in
3 (3)/(4) in
O a. 545
O b. None of the above
O c. 1030
O d. 515
O e. 582

Added by Agust-N W.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Mrinal R

Step 1

The formula for torsional stiffness is: k = (G * d^4) / (16 * D^3 * n) Where: G = Shear modulus = 17.8 Mpsi = 17.8 * 10^6 psi d = Wire diameter = 0.162 inch D = Mean coil diameter = 1.25 inch n = Number of turns = 2.5 Plugging in the values, we get: k = (17.8 Show more…

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37 The finger exerciser is formed by winding A227 hard drawn steel wire to obtain 2.5 turns (when the grip is in the closed position. E = 28.5 Mpsi, G= 17.8 Mpsi. The mean coil diameter is 1.25 inch. The torsional stiffness of the spring is Ib.in./turn is: No.gauge 0.162 inwire -in R. tof estion Wire clip 4in 3in plastic handle Oa.545 Ob.None of the above c.1030 Od.515 Oe.582