(Solved): 1. Two crates are stacked in an elevator car that begins to accelerate in the upwards direction at ...

1. Two crates are stacked in an elevator car that begins to accelerate in the upwards direction at a constant \( 2.10 \mathrm{~m} / \mathrm{s}^{2} \). The top crate has a mass of \( 14.0 \mathrm{~kg} \), and the bottom crate has a mass of \( 33.5 \mathrm{~kg} \). (a) Draw a free body diagram for each crate. (b). Find the magnitude of the normal force that the floor of the elevator car exerts on the bottom crate, and the magnitude of the contact force between the two crates. You may take the acceleration due to gravity as being \( 9.81 \mathrm{~m} / \mathrm{s}^{2} \).