Suppose an astronaut has landed on Planet X.  Fully equipped, the astronaut has a mass of 130 kg and when the astronaut gets on a scale, the reading is 53 N.  what is the acceleration due to gravity on Planet X.  (Answer to 2 decimal places)

A 4.4 kg mass weighs 35.64 N on the surfaceof a planet similar to Earth. The radius ofthis planet is roughly 6 × 10^6 m.Calculate the mass of of this planet. Thevalue of the universal gravitational constantis 6.67259 × 10^−11 N · m^2/kg^2.Answer in units of kg. Calculate the average density of this planet.Answer in units of kg/m^3.

2.

Newton's law of universal gravitation is represented by Mm F = G- where F is the gravitational force, M and m are masses, and r is a length. Force has the SI units kg · m/s2. What are the SI units of the proportionality constant G? m3 kg - s2 m kg ·s3 m2 kg · s2 m2 kg · 3

(a) Find the magnitude of the gravitational force (in N) between a planet with mass 8.25 ✕ 1024 kg and its moon, with mass 2.20 ✕ 1022 kg, if the average distance between their centers is 2.20 ✕ 108 m.  ___N (b) What is the moon's acceleration (in m/s2) toward the planet? (Enter the magnitude.)  ___m/s2 (c) What is the planet's acceleration (in m/s2) toward the moon? (Enter the magnitude.)  ___m/s2

On a planet whose radius is 1.5 x 10^7 m, the acceleration due to gravity is 20 meter per second square. An astronaut with a mass of 66 kg is standing on this planet. Find the mass of the planet?

Calculate the force (in Newtons) required to push a 30kg wagon up a 0.4 radian inclined plane. One Newton (N) is equal to 1 kg-m, and the force due to gravity on the wagon is F = m * g, where m is the mass of the wagon, and g is the acceleration due to gravity (9.8 ). Please ignore friction in this problem. Hint: draw a picture, and express the forces on the wagon as vectors. Force = N

Part A Comets travel around the sun in elliptical orbits with large eccentricities. If a comet has speed 2.1×104 m/s when at a distance of 2.6x1011 m from the center of the sun, what is its speed when at a distance of 4.0×1010 m. Express your answer in meters per second. Πνα ΑΣΦ m/s

If mass 1 and mass 3 are 5.00 kg, what is the total gravitational potential energy of the three masses?

Consider the gravitational acceleration on the surface of the Moon and of Mars. a) What is the acceleration, in meters per square second, due to gravity on the surface of the Moon? You will need to look up the mass and radius of the Moon.   b) What is the acceleration, in meters per square second, due to gravity on the surface of Mars? The mass of Mars is 6.418 × 1023 kg and its radius is 3.38 × 106 m.   Given: the radius of the moon is 1,080 miles