Problems 36.3 8: 36.4.
Consider the elevator shown in the gure below. The motor
system is comprised of an electric motor M that turns a belt
around the frictionless pulley P. The mass of the elevator E is
3000 kg. and the mass of the counterweightw is 200
Problem 3C.5 [15 pts].
A spring is used to stop a 50-kg package which is 2 M
moving down a frictionless 20 incline. The spring
has a constant k = 30 kN/m and (is held by cables so
that it is initially compressed 20 mm) or (is initially
Problem 3C2 [10 pts).
The last segment of the triple jump track-and-eld
event is the jump, in which the athlete makes a
nal leap, landing in a sand-lled pit. Assuming
that the velocity of a 70-kg athlete just before
landing is 9 m/s at an angle of 35 with
Dynamics Quiz #SC March 2, 2016 page 2
Problem 3C.1 [10 m). .
BlockA is travelling with a speed of F on a _. (1-|
frictionless smooth surface when the surface
suddenly becomes rough with a coeicient of
friction of M causing the block to stop after a