A cantilever wood pole carries force P 5 300 N applied at its free end, as well as its own weight (weight density 5 6 kN/m3). The length of the pole is L 5 0.75 m and the allowable bending stress is 14 MPa. The required diameter of the pole is approximately:
(A) 4.2 cm
(B) 5.5 cm
(C) 6.1 cm
(D) 8.5 cm
(B) 5.5 cm
You might also like to view...
The largest satellites of Jupiter are known as the ____________________ satellites
Fill in the blank(s) with correct word
Friction: The figure shows a system consisting of three blocks, a light frictionless pulley, and light connecting ropes that act horizontally on the upper two blocks. The 9.0-kg block is on a perfectly smooth horizontal table. The surfaces of the 12-kg block are rough, with µk = 0.30 between the 12-kg and 9.0-kg blocks. The mass M of the hanging block is set so that it descends at a constant velocity of 3.25 m/s.(a) What is the mass M of the hanging block?(b) The mass M is now changed to 5.0 kg, causing it to accelerate downward after it is released. What is the acceleration of the hanging mass?
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
Alain Aspect’s experiments support the quantum prediction that superluminal connections do exist between measuring devices, connections which in fact violate the special theory of relativity.
The space time diagram in figure R2.12 shows the world lines of various objects. Which object has the largest speed at time t = 1 s?
A. A
B. B
C. C
D. D
E. E