http://www.ck12.org Chapter 4. Newton’s Laws
- Now the man ties one end of the rope to the ground and is held up by the other. Does the rope break in this
situation? What precisely is the difference between this problem and the one before? - A crane is lowering a box of mass 50 kg with an acceleration of 2. 0 m/s^2.
a. Find the tensionFTin the cable.
b. If the crane lowers the box at a constant speed, what is the tensionFTin the cable?- A physics student weighing 500 N stands on a scale in an elevator and records the scale reading over time.
The data are shown in the graph below. At timet=0, the elevator is at rest on the ground floor.