An object is traveling around a circle with the radius of 5cm. If in 20sec the central angle of 1/3 radian is swept out, what is the angular speed of the object? Linear speed?
Here's how I did it. angular speed-->
a) omega=theta(in radians)/elapsed time
= π/3/20= π/3*1/20 = π/60...
A 1.21 g samara--the winged fruit of a maple tree--falls toward the ground with a constant speed of 1.1 m/s What is the force of air resistance exerted on the samara?
I know that F=ma
I also know I have to account for 9.81 N for g. So by upward force am I looking for W? That would be 11.9N.