Block A of mass 6 kg rests on a rough 30° incline and is connected over a smooth pulley at the top to a hanging block B of mass 5 kg. The coefficient of kinetic friction between block A and the plane is 0.10. Friction is calculated by multiplying the kinetic friction coefficient with the normal force. When released, the system moves with block B descending. Taking g = 10 m/s², what is the magnitude of the acceleration of the system?
What is meant by inertia?
A skydiver of mass 75 kg first falls freely without a parachute, then opens the parachute. Before the parachute opens, the skydiver’s terminal velocity is 60 m/s. After the parachute opens, the new terminal velocity is reduced to 15 m/s. Which statement best explains this change?
A skydiver falls through air and eventually reaches a constant velocity. This velocity is called:
Which of the following is a contact force?
A satellite orbits Planet X at a constant speed in a circular path. The gravitational force provides the centripetal force needed for the orbit. The orbital speed v is related to the planet's mass M and orbital radius r by the formula v = √(G M / r), where G is the gravitational constant. If the mass of Planet X is doubled, while the orbital radius of the satellite remains the same, how must the orbital speed of the satellite change to maintain a stable orbit?