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 Range Rover Sport can tow up to 7,716 pounds, which is among the highest capacities for luxury midsize SUVs. Its few equals in towing capacity are the Volkswagen Touareg and big brother Land Rover Range Rover, while the Toyota Land Cruiser outclasses all three with its tow rating of 8,100 pounds.