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Q1. Assume a constant upward slope of 32; calculate the horizontal and vertical components of the acceleration of a truck that slowed from 140 to rest in 7.3.
Q2. Mass m1 = 7.21 kg sits on a frictionless inclined plane that makes an angle θ = 50.1o with the horizontal. A mass less string is tied to m1, passes over the frictionless pulley, and is tied to mass m2 hanging on other end.
a) If the system is in equilibrium: find out the mass of m2.
b) Assume the original mass m2 is replaced by a mass of 22.103 kg. Find out the magnitude of the acceleration of masses now.
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A 60.0-kg skater begins a spin with an angular speed of 6.0 rad/s. By changing the position of her arms, the skater decreases her moment of inertia by 50%. Find the skater's final angular speed?
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