A 250 g uniform meter stick is pivoted about its center with…

A 250 g uniform meter stick is pivoted about its center with masses m1 = 40.0 g and m2 = 95.0 g attached to the ends as shown. Taking the y-direction as vertical, determine the magnitude of the angular acceleration of the system due to gravity when θ = 60.00. (moment of inertia of a rod pivoted about the center = 1/12 mass x length2) 2325 E4Q9.png

A 15.0 kg rigid rod,1.00 m in length, joins masses of 4.00 k…

A 15.0 kg rigid rod,1.00 m in length, joins masses of 4.00 kg and 3.00 kg at each end. The combination rotates in the xy plane about a pivot through the center of the rod. If the masses are moving with a speed of 12.0 m/s, what torque applied to the system would be needed to bring the system to rest in 8.0 s?   (moment of inertia of a rod pivoted about the center = 1/12 mass x length2) 2325 E4Q7.png

A hungry bear of mass 85.0 kg walks out onto a beam in an at…

A hungry bear of mass 85.0 kg walks out onto a beam in an attempt to retrieve a basket of food hanging at the end of the beam. The beam is uniform, has a mass of 20.0 kg, is 8.00 m long, and pivoted at the wall. The basket weighs 10.0 kg. If the wire can withstand a maximum tension of 900 N, what is the maximum distance from the wall the bear can walk out onto the beam before the wire breaks? 2325 E4Q6.png