Una viga metálica uniforme de longitud L= 4 m pesa 100 N y sostiene un objeto de 225 N como se muestra en la figura 4. Calcule la magnitud de las fuerzas que ejercen sobre la viga las columnas de apoyo colocadas en los extremos. Suponga que las longitudes son exactas.

Astudent looks at ocean waves coming into the beach. an ocean wave with more energy will a) have a greater height. b) have a greater period. c) travel toward the beach faster. d) strike the beach with greater frequency.

True or false: the revolution of the earth creates day and night as it rotates around the sun

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.