Dos bloques son acelerados a lo largo de una superficie sin fricción como se muestra en la figura 8. Fuerzas de fricción evitan que los bloques se deslicen uno respecto del otro y los dos se mueven con la misma aceleración. Si F=1.2 N y M=1.0
kg, determine la componente horizontal (magnitud y dirección) de la fuerza de fricción que ejerce el bloque grande sobre
el bloque pequeño.

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?

The two required components for a generator are

Ahorizontal force of 400.0 n is required to pull a 1760 n truck across the floor at a constant speed. find the coefficient of sliding friction.