Categorize each of the following constraints as either scleronomic and rheonomic. i. A simple pendulum with its length changing with time as a given function l(t). ii. A cylinder rolling without slipping on a rough inclined plane of angle a. iii. A particle sliding down the inner surface of a paraboloid of revolution having its axis vertical and vertex downward.

Pr5. A pointlike body of mass m made of lead is fixed inside a homogeneous solid sphere of radius R and mass m at distance R/2 from the center of the sphere. This body is placed on a horizontal rough surface. Find the period of small oscillations of the sphere around its equi- librium position. (The sphere rolls without slip- ping on the surface. The moment of inertia of a homogeneous sphere of mass m and radius R is 2mR* /5.) R/2

A mass weighing 4 Ibs. stretches a spring 6 in. If the mass is pushed upward, contracting the spring distance 1 in and then set in motion with a downward velocity of 2 fl/s, and if there is no damping. a. Find the position function u of the mass at any time t. b. Determine the frequency, period, amplitude, and phase of the motion.

Consider an ideal spring with spring constant k = 20 N/m. The spring is attached to an object of mass m = 2.0 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance xo = 50 cm from equilibrium and then released with an initial speed vo= 0 m/s toward the equilibrium position. x=0 equilibrium initial state a. What is the period of oscillation for this system? b. Starting at t = 0, how long will it take for the object to first return to the equilibrium position?