Two   blocks  are  connected  via  a  pulley,  both  blocks  have  a  mass  of  10.kg.  One  block  rests  on  a  horizontal  surface and  the  other  one hangs  freely by  a  cord which  passes over  a  pulley.  Assume  the  cord  does not  stretch, ignore  mass  of  pulley  and  cord,  therefore  acceleration  is  the  same  for  both  blocks  and  tension  is  the  same  for  both  blocks.  The  hanging  block  moves  down so  the  block  lying on  the  horizontal  surface  moves  to  the  right. What  is  the  acceleration (m/s^2) of  the  blocks  if  the coefficient of  friction  between  the  block  and  the   surface  is   0.50.

Given a block of mass 5.00 kg on a table being pulled horizontally by a rope. The rope pulls to the left with a force of 25.0 N. Which of these expressions would yield the acceleration of the block in SI units?   25 x 5   5 divided by 25   25 x52   25 divided by 5   zero

Suppose you are pushing a box across the floor. The box has a mass of 50.0 kg, and there is a constant force of friction opposing your push of 75.0 N. As you push the box, it accelerates from rest to a speed of 2.50 m/s in 15.0 seconds. (a) What is the force of your push, in Newtons? (b) Suppose the box had a mass of 25.0 kg, and you pushed in with the same for that you found in part (a). What would the acceleration of the box be? How long would it take to reach a speed of 2.50 m/s, starting from rest?

An elevator cabin has a mass of 364.1 kg, and the combined mass of the people inside the cabin is 180.9 kg. The cabin is pulled upward by a cable, with a constant acceleration of 1.75 m/s2. What is the tension in the cable?

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Two boxes A and B are connected by a lightweight cord and resting on a smooth (frictionless) table. The boxes have masses of 12 kg and 10 kg. A horizontal force of 40 N is applied to the 10 kg box. Find the tension in the cord connecting the boxes. O 27.21 N O 29.21 N O 27.65 N O 21.84 N

You drop an object of mass m from a tall building. Suppose the only forces affecting its motion are gravity, and air resistance proportional to the object's speed with positive constant of proportionality k. Let g denote gravitational acceleration (a positive constant). Express the total force in terms of m, g, and the object's velocity v, where upward displacement is considered positive. F = mg - kv Newton's second law tells us that force is equal to mass x acceleration, F = ma. Relating acceleration to velocity, rewrite the equation for total force above as a first order differential equation for v as a function of t. Denote v' as dv dt v(t) m(- dr) this is not an equation. Solve this differential equation for v(t) with the initial condition v(0) = V0. = mg (1-e ==) m k Find the terminal Terminal velocity = mg k X velocity. X syntax error: X X

Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.

An 18.5 lb box is placed on the ground. What force (in lb) does the ground exert on the box? (magnitude and direction). A cord is attached to the box and run through a pulley directly above the box, so that the cord is vertical. The free end of the cord is then connected to a hanging weight. Calculate the force exerted by the ground on the box (in lb), if the hanging weight is 12.0 lb (magnitude and direction) A 29.0 lb weight is substituted for the 12.0 lb weight. Calculate the new force (in lb) exerted by the floor on the box (magnitude and direction).

A stack of two crates is being accelerated upwards by two cables. The cables are directly attached to crate 1 and the tension in each cable is 3248 N. You may assume that the masses of the cables are negligible compared to the masses of the crates. The acceleration of the crates is? bottom crate crate 1 is 109 kg. the top crate is 248 kg.