The potential energy of the meteorite is approximately GMm/distance.
Add that PE, and the initial KE of the meteorite, and that is the final KE of the body, 1/2 mv^2, solve for v.
Determine the speed of the meteorite v (in m/s) just before it hits the surface of the planet. (The planet has no atmosphere, so we can neglect all friction before impact)
v=
Add that PE, and the initial KE of the meteorite, and that is the final KE of the body, 1/2 mv^2, solve for v.
KE(initial)=KE(final) - GMm/(Radius of Earth)
Can somebody please help with the aeroplane landing and Pendulum problems? :(
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I've worked out the pendulum and will post the solution as soon as i wake up now i need sleep, we have still 2 days left so no worries
Block on rotating disk is easy - I got option (a) :)
solve for v: mv^2/R=umg....
like, suppose the string was cut at and angle alpha=70degrees, the launch angle is 70 degs too???
solve for v: mv^2/R=umg....what's u?