What is the average thrust needed to land
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For a pendulum in a gravity field with point mass m and length L from mass to the pivot, derive the nonlinear equation of planar motion if theta is measured from the vertical (i.e., the equilibrium position theta_o = 0).
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A 200 kg lander is approaching Mars. Assume a gravitational acceleration of 3.7 m/s^2. At the illustrated instant, h= 15 m and v = 2.5 m/s. What is the average thrust needed to land with a touchdown speed of 0.5m/s after 10 s?
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Car A is speeding in the positive x direction and is about to run through a red light and collide with car B ( heading in the positive y direction). At the time of collision va=vai m/s and vb=vbj m/s. Ma=1500 kg, Mb=2700 kg.
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