You are sitting in the front row in your physics class. Estimate the gravitational force that the instructor exerts on you. Identify the assumptions and approximations you made to reach your answer. How does the magnitude that you estimate for this force compare with the gravity force exerted on you by the earth?
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You are sitting in the front row in your physics class. Estimate
the gravitational force that the instructor exerts on you. Identify the assumptions
and approximations you made to reach your answer. How
does the magnitude that you estimate for this force compare with the
gravity force exerted on you by the earth?
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- Farrell has just begun the astronaut training program at NASA. As part of the program he weighs himself on the surface of the earth and finds that he has a mass of 110 Kg. The mass of the earth is 5.98E+24 kg. a.What is the weight (in Newtons) of the astronaut on the surface of the earth (6370000 meters from the center of the earth)? b.because of his optimal weight and hard work in training, Farrell is chosen to collect data from space around earth and is launched up to twice the earth's radius (double the distance to the center of mass). what is his weight or force of gravity at this altitude? c.Calculate the force of gravity on this astronaut in the ISS:In the figure, three 8.28 kg spheres are located at distances d1 = 0.415 m, and d2 = 0.414 m. What are the (a) magnitude and (b) direction (relative to the positive direction of the x axis) of the net gravitational force on sphere B due to spheres A and C? di В (a) Number i Units (b) Number UnitsA mass m is suspended from a massless spring of natural length 90 cm with the spring constant k = 10 Nm²² and causes the spring to extend by 9.9 cm. Assuming the gravitational field strength g = 9.8 ms2, calculate the value of the mass on the spring. Give your answer in SI units. Answer: Choose... +
- Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun but a much smaller diameter. Part A If you weigh 685 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 19.0 km ? Take the mass of the sun to be ms = 1.99x1030 kg , the gravitational constant to be G = 6.67x10-11 N - m /kg? , and the free- fall acceleration at the earth's surface to be g = 9.8 m/s Express your weight wstar in newtons. • View Available Hint(s) ? Wstar = SubmitA mass m is suspended from a massless spring of natural length 90 cm with the spring constant k 10 Nm and causes the spring to extend by 6.8 cm. Assuming the gravitational field strength g = 9.8 ms2, calculate the value of the mass on the spring. Give your answer in SI units.Which of the following is NOT true of the force of gravity? O There is a gravitational force between any objects that are massive. It is inversely proportional to the square of the distance between the two bodies. O It is proportional to the mass of each object. O The force of gravity only acts on things that are close together.
- The figure below is for a 7 kg box on a horizontal floor. Initially, you are pushing horizontally on the box and friction is opposing you. Then, you stop pushing the box. Use g = 10 m/s2. v(m/s) 6.0 4.5 3.0 1.5 0.3 0.6 0.9 t(s) Find the gravitational force acting on the box. Find the normal force acting on the box. Assume the frictional force is constant throughout the motion and find the frictional force. Assume the frictional force is constant throughout the motion and find your pushing force. Find the displacement of the box over the entire time shown.At the surface of a certain planet, the gravitational acceleration g has a magnitude of 17.0 m/s^2 . A 26.0-kg brass ball is transported to this planet. - What is the mass of the brass ball on the Earth and on the planet? - What is the weight of the brass ball on the Earth and on the planet?5
- Square A and square B have equal massess, 0.260 kg. Additionally, a smaller square with a mass of 0.010 kg is situated at point P. Find the magnitude and direction for questions. net gravitational force acting on the 0.010 kg square at point P? net gravitational force acting on the 0.260 kg square at point A? net gravitational force acting on the 0.260 kg square at point B?Exoplanet Taphao Keow is a Jupiter-sized planet orbiting another star. It has a mass of approximately 1×10+27[kg]. Its actual radius is not currently known, but we do know that the radius of Jupiter is 7×107[m]. Question: If Taphao Keow had a radius that was the same radius as Jupiter, what would it's local surface gravitational acceleration be? O 266 [m/s2] 124 [m/s²] 70 [m/s²] O 24 [m/s²] O 14 [m/s²] It would have a gravitational acceleration far larger than any of the other answers (many orders of magnitude larger) It would have a gravitational acceleration far smaller than any of the other answers (many orders of magnitude larger)Let's say that I want gravitational force Fg = 1.00 N. what combination of m1, m2, and r will give that? Hints: There are many possible answers, you just need to find one. To avoid trial and error, you can pick values for m2 and r (distance) then use Newton’s law of gravity to find the m1 value giving Fg = 1 N.