To give their 19 kg child a ride mom and dad pool on at 3.7 kg sled with a force of 55 Newton siege at an angle of 35° to the four direction if there’s a frictional force of 57 N acting on a sled what is the acceleration of a child and sled

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =