Recent content by bluejay1

Homework Statement A cue ball is hit 4.5 cm above the horizontal surface uk = 0.35 it is on. The ball is 6 cm in diameter and has a mass of 250 g. It is hit by a cue stick with an average force of 6000 N during a contact time of 20 usec. (a) What is the ball’s speed after it is hit...

Homework Statement 3B. A uniform wooden sign of mass 4.0 kg hangs beside a building wall. The sign is 2.00 m high and 4.00 m wide. It is supported by a hinge at P, that is midway up one edge, and by a light rope that is attached exactly three-quarters of the distance across the upper...

Homework Statement Three objects m1. m2 and m3 are suspended from three massless and frictionless pulleys as shown in the diagram. m1 is 6 kg, m2 is 2 kg and m3 is 3 kg. Find the tension of the string when the system is set in motion (i.e. all masses are moving). Answer in N. Homework...

I was thinking about the torque, but don't you need to know the length of the rod to find them?

Homework Statement Basically, the string is attached a to a wall at the top right, with a mass m hanging on the other end. It asks to find the max mass m that can hang before bottom of the rod slips. Homework Equations Fnetx=0 Fnety=0The Attempt at a Solution I know that Ft=mg for the...