El bloque A de la figura se posiciona en una mesa horizontal sin fricción y es acelerado por una fuerza generada por el bloque B. B cae verticalmente mientras A se desliza horizontalmente sobre la mesa. Ambos bloques tienen una masa M. a.- La masa total del sistema es:

b.- La fuerza que acelera A+B es el peso de

c.- El peso de B es:

d.- La aceleración del sistema es:

Suponga que el bloque A tiene 1 kg de masa y B es un objeto de masa reducida (una pluma o moneda).
e.- En comparación con el problema anterior, la aceleración del sistema es

f.- En este caso, la aceleración de B es:

Suponga que A es ahora una pluma o moneda, y B un objeto de masa 1 kg. Conteste
g.- La aceleración del sistema es:

h.- En este caso, la aceleración de B es:

i.- En caída libre la aceleración es:

j.- Si se lanza verticalmente hacia arriba un objeto, en su punto más alto la aceleración sería:

Which type of circuit is becoming more common in residential electrical design and construction? a. hazardous-area circuit b. three-phase circuit c. 480-volt circuit d. communication circuit

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n

Learning goal: to understand newton's 1st law. newton's principia states this first law of motion: an object subject to no net force maintains its state of motion, either at rest or at constant speed in a right line. this law may be restated as follows: if the sum of all forces acting on an object is zero, then the acceleration of that object is zero. mathematically this is just a special case of the 2nd law of motion, f⃗ =ma⃗ , when f⃗ =0. when studying newtonian mechanics, it is best to remember the 1st law in two ways: if the net force (i. e., sum of all forces) acting on an object is zero, the object will keep moving with constant velocity (which may be zero). if an object is moving with constant velocity, that is, with zero acceleration, then the net force acting on that object must be zero. complete the following sentences to see if you can apply these ideas. part a if a car is moving to the left with constant velocity, one can conclude that