Force MCQ Practice_12

Описание: A satellite is in line with a planet of mass m1 and a moon with mass of m2 as shown in the figure below, and m1 is greater than m2. The net force on a satellite is zero at this position. How does the distance between the satellite and a center of the planet, d1, compare to the distance between the satellite and the center of the moon, d2?


A 5 kg object is released from rest near the surface of a planet such that its gravitational field is considered to be constant. The mass of the planet is unknown. After 2 s, the object has fallen 30 m. Air resistance is considered to be negligible. What is the magnitude of the gravitational force |𝐹_𝑔 | exerted on the 5 kg object near the planet’s surface?


A space capsule with a mass mo of 500 kg is launched into a circular orbit at a height ho of 400 km above the surface of a planet with has a mass Mo of 1 x 1024 kg and radius of 1 x 106 m. What is the speed of the capsule in orbit?

A 2.0 kg cart rolls with negligible friction on a horizontal surface, as shown below. The coefficient of static friction between the cart and the 1.0 kg block on top of the cart is 0.7. If a horizontal 15 N force is applied to the cart as shown and the block does not slide on the cart, the magnitude of the horizontal component of the force that the block exerts on the cart is most nearly