Update: part A was: Use conservation of energy to calculate the linear speed of the yo-yo just before it reaches the end of its 1.5 m long string, if it is released from rest. v=1.2 m/s.Follow.e know linear KE=1/2*m*v^2 and rotational KE=1/2*I*w^2 where I is the moment of inertia and in this case it is I=mr^2. So....
We always recommend having at least a couple of thousand pounds of towing capacity in excess of what your trailer weighs, and our 4,300-pound test trailer was probably a fair representation of what people will be towing with a Grand Cherokee.
The maximum towing capacity of the 2007 through 2009 Ford Explorer is 3,500 pounds. Models from 2010 and later have a towing capacity of around 5,000 pounds when adequately equipped. This towing capacity increased in 2007 from the 2006 model, which had a towing capacity of 3,110 pounds. More recent models of the Ford Explorer require engine upgrades from the base 2.0-liter turbocharged engine to a V6 version in order to have the maximum towing capacity available. The base 2.0-liter engine on the Ford Explorer has a towing capacity of 2,000 pounds. The 2015 model comes with many options to assist in towing, including a rear camera, hill start assist and a sway control feature.