total mechanical energy is the sum of kinetic energy and potential energy. so
d option is correct.
Questions 17-20 A small object of mass m is launched from the surface of the Earth...
Questions 17-20 A small object of mass m is launched from the surface of the Earth with a speed of to in a direction perpendicular to the Earths surface. 18. Find an expression for the speed v of the object at a height h R (ie., a distance 2R from Earth's center).
P3. A rocket of mass -1.20x10'kg is launched vertically upward from point A on the earth's surface with an initial speed v, 7.00km/s a. (12) Calculate the maximum height H of point B above the earth's surface at which the rocket will momentarily come to rest, before it starts falling back to the earth Hint: Use conservation of energy. b. (4) Determine the gravitational acceleration a at point B. c. (9) Calculate the total mechanical energy E of the rocket....
Derive an expression for the energy needed to launch an object from the surface of Earth to a height h above the surface. Ignoring Earth's rotation, how much energy is needed to get the same object into orbit at height h? Express your answer in terms of some or all of the variables h, mass of the object m, mass of Earth mE, its radius RE, and gravitational constant G.
Derive an expression for the energy needed to launch an object from the surface of Earth to a height h above the surface. Ignoring Earth's rotation, how much energy is needed to get the same object into orbit at height h? Express your answer in terms of some or all of the variables h, mass of the object m, mass of Earth mE, its radius RE, and gravitational constant G.
Assume a small object of mass 1.0 kg is launched into circular orbit close to the Earth's spherical surface. Ignore air resistance. Find (a) its orbital speed (km/s), its orbital period (minutes), (c) it total mechanical energy in orbit.
QUESTION 10 A rocket of mass 2000 kg is launched straight upwards from the Earth's surface to an altitude of 10,000 km. How fast was the launch speed? Radius of the Earth is 6.37x10 m. Mass of the Earth is 5.97x10 kg. The Universal gravitational constant is 6.67x10" N /kg a 442.7 m/s Ob. 1390 m/s c.4119 m/s d. 8739 m/s Oe. 10841 m/s
2. A rocket of mass m is fired vertically from the Earth, with an initial speed U. It rises to a height R/2 before falling back to Earth, where R is the radius of the Earth. Calculate U in terms of G, M (the Earth's mass) and R. The rocket is fired with the same initial speed, but this time at an angle 45° to the horizontal. Calculate its angular momentum J and total energy E, and use these to...
Consider the expression for potential energy at the surface of a spherical mass GMm R. Р.Е. where M is the mass and R is the radius of the spherical mass, and m is the mass of some object at the surface. Show that the difference between this potential and that of an object a distance h above the surface is mgh, where g is a constant that is the same for any m or h. Derive an expression for g...
10. A small object of mass m, on the end of a light cord, is held horizontally at a distance r from a fixed support as shown. The object is then released. What is the tension in the cord when the object is at the lowest point of its swing? 11. A wooden brick slides on a horizontal frictionless floor with a constant velocity v. On the brick's path there is a 50 cm long rough area with a friction...
An object with mass m away from the center of the center of the earth with mass M by the relationship r = h + R where R the radius of the earth and h the object height from the surface of the earth.At any height h, the value of the acceleration earth gravity equal half its value at the surface?