If the wheel is subjected to a normal force of p = 2.3 kn , determine the average shear stress developed in the pin. neglect friction between the inner scaffold puller leg and the tube used on the wheel. express your answer to three significant figures and include the appropriate units.

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?