Engineering Board Exam Reviewer · Engineering Mechanics · medium

A shear force of 10 kN acts over a cross-sectional area of 500 mm2. What is the average shear stress?

  1. 0.02
  2. 20
  3. 40
  4. 0.05

Answer

B. 20

Solution

= V/A = (10 × 1000 N) / 500 mm2 = 20 MPa.

More Engineering Mechanics questions

  1. A material has an ultimate stress of 400 MPa and is designed with a factor of safety of 2. What is the allowable stress?
  2. A steel bar (E = 200 GPa) with a length of 2 m and a cross-sectional area of 250 mm2 carries an axial load of 15 kN. What is its elongation?
  3. An axial load of 20 kN is applied to a bar with a cross-sectional area of 300 mm2. What is the normal stress in the bar?
  4. A point on the rim of a wheel of radius 0.6 m rotates at an angular velocity of 7 rad/s. What is the linear (tangential) speed of that…
  5. A wheel starts with an angular velocity of 8 rad/s and has a constant angular acceleration of 5 rad/s2. What is its angular velocity after…
  6. A solid cylinder of mass 6 kg and radius 0.35 m spins about its central axis at an angular velocity of 8 rad/s. What is its rotational…
  7. A solid cylinder of mass 7 kg and radius 0.3 m rotates about its central axis. What is its moment of inertia about that axis?
  8. A point on the rim of a wheel of radius 0.5 m rotates at an angular velocity of 6 rad/s. What is the linear (tangential) speed of that…
  9. A wheel starts with an angular velocity of 7 rad/s and has a constant angular acceleration of 4 rad/s2. What is its angular velocity after…
  10. A solid cylinder of mass 5 kg and radius 0.3 m spins about its central axis at an angular velocity of 7 rad/s. What is its rotational…

All Engineering Mechanics Reviewer questions