Q- Tarzan (m = 85.0 kg) tries to cross a river by swinging from a vine. The vine is 10.0 m long, and his speed at the bottom of the swing (as he just clears the water) will be 8.00 m/s. Tarzan doesn't know that the vine has a breaking strength of 1000 N. Does he make it safely across the river?
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. April 2016
Motion in 1D with Variable Mass and Air Resistance
Q- A raindrop is observed at time t=0 when it has mass m and downward velocity u. As it falls under gravity its mass increased by condensation at a rate k and a resisting force acts on it proportional to its speed and equal to kv when the speed is v. Show that
d(M2 v)/dt =M2g, where M = m +kt.
(On …
NLM
Q1- An airplane has a mass of 3.1 x 104 kg and takes off under the influence of a constant net force of 3.7x104 N. What is the net force that acts on the plane's 78kg pilot?
Q2- In the amusement park ride known as Magic, powerful magnets accelerate a car and it's riders from rest to 45 m/s in 7 sec…
6 .
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