PreviousPhysics / Mechanics - Rotational Motion / Kinematics
2018 Q14
A particle of unit mass is moving on a plane. Its trajectory, in polar coordinates, is given by r(t) = t^2, θ(t) = t, where t is time. The kinetic energy of the particle at time t...
NextMechanical Engineering / Strength of Materials - Principal Stresses
2018 Q29
The state of stress at a point, for a body in plane stress, is shown in the figure below. If the minimum principal stress is 10 kPa, then the normal stress $\sigma_y$ (in kPa) is
