Recent content by ludakrishna

F (up) = (mgsinθ + friction )

Mass per second = 55kg , h= 2m because mgh = ½ mv2 Velocity of sand v=sqrt(2gh) , = 6.2 m/s I am going round and round. When sand hits the top of the truck it hits it with a force which is equal to change in momentum. Final velocity of sand is 6.2 m/s...

The force required to push a mass m up an incline is equal to F (up) = (mgsinθ - friction ) When going down power is required only to overcome friction F (down ) = ( friction ) Power = Force x velocity P (up) –P(down) = ( force up – force down ) x...

1. A dump truck is being filled with sand. The sand falls straight downward from rest from a height of 2.00 m above the truck bed, and the mass of sand that hits the truck per second is 55.0 kg/s. The truck is parked on the platform of a weight scale by how much does the scale reading exceed...

1.) A 1900-kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 27 m/s. Going up a hill, the car's engine needs to produce 47 hp more power to sustain the constant velocity than it does going down the same...

Three particles far away from any other objects are located on a straight line. The masses of these particles are ma = 363kb, mb= 517 kg, and mc = 154kg. Find the magnitude and direction of the net graviational force actiong on particle a, particle b, and particle c. The distance between a and b...

1. Two blocks are connected by a rope that passes over a set of pulleys. One block has a weight of 412N, and the other has a weight of 908N. The rope and the pulleys are massless and there is no friction. a.) What is the acceleration of the lighter block? b.) Suppose that the heavier block is...