# Find the Difference in Tension: Steel Cable & 20kg Block

There are two. The tension on the left end and the tension on the right end. The difference between the two is the NET force.In summary, a 90.0 N force applied to a massive steel cable causes a 20.0 kg block to reach a speed of 3.60 m/s in 2.40 s on a horizontal, frictionless surface. The difference in tension between the two ends of the cable is 30 N.

## Homework Statement

A massive steel cable drags a 20.0 kg block across a horizontal, frictionless surface. A 90.0 N force applied to the cable causes the block to reach a speed of 3.60 m/s in 2.40 s.
What is the difference in tension between the two ends of the cable?

F=ma
a=v/t

## The Attempt at a Solution

a=3.6/2.4= 1.5 m/s2

90N=m*1.5
m=60
m(block)=20kg
m(cable)=40kg

F=40*1.5=60

90-60=30

Just looking at the numbers it doesn't look right

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## Homework Statement

A massive steel cable drags a 20.0 kg block across a horizontal, frictionless surface. A 90.0 N force applied to the cable causes the block to reach a speed of 3.60 m/s in 2.40 s.
What is the difference in tension between the two ends of the cable?

F=ma
a=v/t

## The Attempt at a Solution

a=3.6/2.4= 1.5 m/s2yes

90N=m*1.5
m=60
m(block)=20kg
m(cable)=40kgyes

F=40*1.5=60 this is F_net

90-60=30no

Just looking at the numbers it doesn't look right