Science Homework Help. University Of Massachusetts Boston Physics Experiment Questions
I’m working on a physics multi-part question and need an explanation to help me learn.
1) A 1m vertical pendulum has an angle of 20 degrees and a bob of mass 0.8kg.
a) Find the driving force experienced by the bob half angle way down the swing. b) Is the pendulum bob moving in URM? c) Can you find the formula for centripetal force experienced by the pendulum bob half angle way down? If yes write it down. Hint: Find the tangential speed at that point (half angle way down). d) What is angular frequency of this pendulum for small angles?
2) A leaver of length 20m weighs 5kg, it has a mass m1 at the left end and a mass m2 at the right end m1=12kg and m2=9kg at what length from the left end should the fulcrum be placed such that this system will be in equilibrium? Show your work.
3) What is the time of impact of a ball with mass 0.5kg that strikes a wall with a force of 12N and has a change in momentum of 6kgm/s. Also what is the change in speed of the ball?
4) A mass of 10kg travels to the right at a rate of 12m/s and strikes another mass having 4 times the mass at rest. By what percent will the final speed of these two masses change if the collision is completely inelastic?
5) Derive the equation of period for a simple pendulum swinging with a small angle. Show all work.
