A crate is suspended from a crane by a single vertical cable

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

A crate is suspended from a crane by a single vertical cable. While the crate is momentarily at rest, the tension in the cable is measured as

980\,\text{N}

. (i) Determine the mass of the crate. (ii) The crane then starts raising the crate with a constant upward acceleration of

1.5\,\text{m}\,\text{s}^{-2}

. Calculate the new tension in the cable. (iii) After reaching the desired height, the crate is lowered with a constant downward acceleration of

2.0\,\text{m}\,\text{s}^{-2}

. Compute the tension in the cable during this motion.