A massive steel cable drags a 20 kg block across a horizontal, frictionless surface. A 90 N force applied to the cable causes the block to reach a speed of 4.0 m/sin a distance of 2.2 m .
here
a = v^2 / 2 * x
a = 4 * 4 / 2 *2.2
a = 3.64 m/s^2
then
F = m * a
90 = (20 + m1) * 3.64
m1 = 4.52 kg
A massive steel cable drags a 20 kg block across a horizontal, frictionless surface. A 90...
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