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bumblebeeliz
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Homework Statement
A force F applied to a mass m1 produces an acceleration of 3.0 m/s2. The same
force applied to a second object of mass m2 produces an acceleration of 1.0
m/s2.
a. Find the value of the ratio m1 / m2.
b. If m1and m2 are combined, what will be the acceleration of the combined mass (m1+ m2) under the action of the force F?
Homework Equations
F=ma
The Attempt at a Solution
a)
I didn't know where to begin. So I chose a random number and assumed that my force was 6 N.
6N = m1 a1
6N = m1 (3.0 m/s2)
6N / 3.0 m/s2 = m1
2 kg = m1
6N = m2 a2
6N = m1 (1.0 m/s2)
6N / 1.0 m/s2 = m2
6 kg = m2
m1/m2 = 2kg/6kg = 0.333 = 3 x 10 -1
b)
F = (m1+m2) a
6N = (2kg + 6kg) a
6N / 8kg = a
0.75 m/s2 = a
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Any suggestions? :)