Physics

A 0.50-kg mass is hooked to two springs as shown in the diagram below. The mass slides without friction, and the spring constant of ONE spring is 15.0 N/m. The mass is given a push, so that its velocity at the equilibrium point (in the middle) is 0.16 m/s. (A) With what frequency does the mass oscillate back and forth? (B) What ...continues

Atwood Machine Special Cases

I have no clue how to go about getting these equations. Can you help me out and explain how to do these. It is not for a test or anything. It is just a homework problem, but I can't figure it out. (See attached file for full problem description and equations) --- Atwood Machine Special Cases: An Atwood machine consist ...continues

Linear and angular velocity.

(See attached file for full problem description with equations) --- A bullet is shot through two cardboard disks attached a distance D apart to a shaft turning with a rotational period T, as shown. (see diagram in attachment) a.) Derive a formula for the bullet speed V in terms of D, T, and a measured angle between ...continues

Laws of Motion: Force, Tension and Acceleration

The sled dog in figure drags sleds A and B across the snow. The coefficient of friction between the sleds and the snow is 0.10. a.) If the tension in rope 1 is 150 N, what is the tension in rope 2? Answer: =? N

Momentum

Is the momentum of a particle propotional to the square of its velocity?

Inelastic collison

In an inelastic collison, is the final total momentum more than the initial momentume, less than the initial momentum or is it the same as the inital momentum?

Momentum

A 3kg ball of putty moving a 1m/s hits and sticks with a 2kg ball initally at rest. The putty and ball then moves with a momentum of what?

Speed of a bullet

How fast must a 10.5 gram bullet be travelling when it strikes a ballistic pendulum that consists of a block of wood with a weight of 3.00 kg that is suspended by chord? The bullet gets embedded in the block. The block rises .220 meters after impact.

Head on collision

Two cars have a head on collision. What is conserved in the collision? Is it momentum, mechanical energy and momentum or kinetic energy?

Magnitude of the impulse

A bullet of mass 20 grams traveling at 350 m/s, strikes a steel plate at an angle of 30 degrees with the plane of the plate. It richochets off at the same angle at a speed of 320 m/s. What is the magnitude of the impulse that the walls gives to the bullet?