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Transcribed Image Text:A 50-kg pneumatic hammer is fitted with a shock
absorber at the top to lessen the impact on the
worker. The vertical displacement of the hammer as
a function of time is given by a(t)=at2-be²
(during the hammer's bounce), where a 15 m/s²
and b-20 m/s² The positive z axis is directed
upward.
Part A
Write an expression for the a component of the vector sum of forces exerted on the hammer as a function
of time t, where t is in seconds
Express your answer in terms of t.
F.(1) m(2a
Submit
ΑΣΦ
6bt)
4
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N
Transcribed Image Text:A 20-kg cart is connected to a 40-kg cart by a
relaxed spring of spring constant 1000 N/m, and
both carts are placed on a low-friction track. You
push the 20-kg cart in the direction of the
40-kg cart with a constant force of 10 N.
What is the acceleration of 40-kg cart at the instant you begin to push? Assume that the direction of push
is the positive direction
Express your answer with the appropriate units.
Submit
μA
0.25
5
m
CO
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