Here is a contraption. let the surfaces be frictionless. a. what must be the ratio of the masses as a function of r? b. if the mass m is 1 m from the center and the angular velocity is 1 rad/s, what must the mass ratio be? let’s say there is friction between the mass m and the horizontal surface with a coefficient of static friction of 0.30. c. what range of angular velocity will allow the masses to not move? consider the two conditions minimum and maximum velocity carefully and separately.

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?