tension in the cord

Please see the attachment. Explain how to breakdown problems. Thanks

Acceleration and direction

A person stands on a bathroom scale in a motinoless elevator. When the elevator begins to move, the scale briefly reads only 0.790 of the person's regular weight. 1) Calculate the acceleration of the acceleration of the elevator 2) Find the direction of the acceleration Positive y-axis points UP

Determine force of air resistance

A fire helicopter carries a 661 kg bucket of water at the end of a 17.0 m long cable. Flying horizontally back from a fire at a constant speed of 44.9 m/s, the cable makes an angle of 32.6 degrees with respect to the vertical. Determine the force of air resistance on the bucket

determine alpha angle

Determine the angle alpha needed in order that there be no force exerted on the hip joint by the leg plus cast.

string tension

Two masses of 3.5 kg each, connected by a string, slide down a ramp making an angle of 34 deg. with the horizontal. The coefficient of kinetic friction between m1 and the ramp is .33. the coefficient of kinetic friction between m2 and the ramp is .18. I know my acceleration is 3.41 m/s^2 How do I determine the tension of ...continues

Physics

1.What is your evidence that light carries energy? 2.It takes light 8 minutes to get to earth from the sun. The sun is 150,000,000,000 meters away. What is the speed of light in meters per second?

Mechanics: Dynamics (Translational and rotational motion).

1. Two equal weights of mass M each are connected by a cord passing over a frictionless pulley of mass mp and radius r. An additional weight of mass m is placed on one of the weights of mass M. Derive the expression for: a) system acceleration a; b) cord tensions. 2. A helicopter rotor blade can be considered a long thin ...continues

Psyics questions...

--Please provide responses for each question. Some are fill-ins and multiple choices... Possibly useful information: velocity=wave*freq; 1.____________is when two waves that are the same place and cancel each other out. a. constructive interference b.destructive interference c. polarization d. the Doppler effect. 2.When a ...continues

Motiron in two dimension: Motion on a verticle Circle.

A small ball is suspended from point A by a tread of length L. A nail is driven into the wall at a distance of L/2 below A, at O. The ball is drawn so that the tread takes up a horizontal position. -At what point in the ball's trajectory will the tension in the tread disappear? -How much farther will the ball move? -What ...continues

Relative Motion : Kinetic and potential energy

You (A) are in a sledge sliding down an inclined plane. (Friction is neglected). An observer (B) at the foot of the plane looks at your initial position at the top of the slide and sees your energy as potential energy (mgh). You (A) slide down to the bottom of the plane and have a velocity of V0. So the observer sees mgh = mV0 ...continues