Teaching Physics with the Physics Suite Edward F. Redish Problems Sorted by Type | Problems Sorted by Subject | Problems Sorted by Chapter in UP

Round and round

 Little Jay is enjoying his first ride on a merry-go-round. (He is riding a stationary horse rather than one that goes up and down.) A schematic view of the merry go-round as seen from above is shown in the drawing below the picture of the horse with a convenient coordinate system. A bit after the merry-go-round has started and is going around uniformly, we start our clock. Little Jay's position and velocity at time t = 0 is shown as a dot and arrow. At t = 0 is the net force acting on Jay equal to zero? If it is, give a reason why you think so. If it isn't, specify the type of force and the object responsible for exerting it. For the next 6 parts, specify which of the graphs below could represent the indicated variable for Jay's motion. If none of the graphs work, write N. The x component of Jay's velocity. The angle Jay's position makes with the x axis. The y component of the force keeping Jay moving in a circle. Jay's angular velocity. Jay's speed. The x component of Jay's position