Asked by Eric
A massive steel cable drags a 20kg block across a horizontal, frictionless surface. A 100N force applied to the cable causes the block to reach a speed of 4.2m/s in a distance of 2.1m .
What is the mass of the cable?
What is the mass of the cable?
Answers
Answered by
Steve
s = v^2/2a, so
4.2^2/2a = 2.1
a = 4.2 m/s^2
F=ma, so
100 = (20+m)(4.2)
m = 3.8 kg
4.2^2/2a = 2.1
a = 4.2 m/s^2
F=ma, so
100 = (20+m)(4.2)
m = 3.8 kg
Answered by
Antonious Hanna
A steel cable lying flat on the floor drags a 20 kg block across a horizontal, frictionless floor. A 100 N force applied to the cable causes the block to reach a speed of 4.1 m/s in a distance of 1.9 m.
Answered by
shiv
ans is absolutely right!
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