Classical Mechanics Answers

A constant push of 250 N is necessary to slide a crate weighing 400 N along a 2.0-meter-long ramp. If the ramp raises the crate 1.0 m, what is the efficiency of the ramp? *

Two balls of mass 30.0 g and 90.0 g are supported by strings 100 cm long. The larger ball is pulled aside until its center of gravity has been raised 5 cm and then released. Assuming the collision to be perfectly elastic, find the velocity of EACH ball after the collision.

Consider a simple harmonic oscillator consisting of a one kilogram mass m on a spring with spring/force constant k and length L`. If the mass of the spring m_s is 9% of the attached mass, and k = 66 N/m, and if we determined the attached body is displaced 3 cm and given a downward velocity of 0.4 m/s - calculate ,→ the frequency ω of the motion, and the amplitude A of the motion

Consider a simple harmonic oscillator consisting of a one kilogram mass m on a spring with spring/force constant k and length L`. If the mass of the spring m_s is 9% of the attached mass, and k = 66 N/m, and if we determined the attached body is displaced 3 cm and given a downward velocity of 0.4 m/s - calculate ,→ the frequency ω of the motion, and the amplitude A of the motion

We have a Cavendish balance set up with two spheres (one small and one large) that are five centimeters apart of masses m = 1 g and m0 = 500 m, respectively. Suppose these design is placed at a point in space far removed from all other bodies. ,→ What is the acceleration a of the body m, and the acceleration a' of the body m' ? [15] ,→ Is this a constant acceleration problem? Explain why or why not!

We have a Cavendish balance set up with two spheres (one small and one large) that are five centimeters apart of masses m = 1 g and m0 = 500 m, respectively. Suppose these design is placed at a point in space far removed from all other bodies. ,→ What is the acceleration a of the body m, and the acceleration a 0 of the body m0 ? [15] ,→ Is this a constant acceleration problem? Explain why or why not!

Tom is driving up a very steep incline hill of about 20 degrees. Car has mass off 1200kg and a coefficient of friction of 0.4 with the road. At the start of the hill the car has a momentum of 30,000 kg•m/s. If car does 875,000J of work over the next 100m what is the new momentum of the car? (Reminder that the friction and Fp will create energy lost/negative work.)

Mike kicks soccer ball at a speed of 2.5m/s his friend Jake kicks it back at a speed of 5.5 m/s (Mass of ball is 0.5kg) a.What was the change in momentum? b. If the ball was in contact with Jakes foot for 0.07 seconds, what force did Jake apply?

A particle of unit mass moves in a path given by r(t)=6ti

What is central force