A 2.80 kg block (mass 1) and a 4.90 kg block (mass 2) are connected by a light string as shown; the inclination of the ramp is 40.0°. Friction is negligible.
(a) What is the acceleration (in m/s2) of each block? (Enter the magnitude.)
_____ m/s2
(b) What is the tension (in N) in the string?
_____ N
Homework Answers
Tension in the string T = m2 g =(4.9)(9.8) = 48.02 N
Net force on the system F = T -(m1g sin 40)
= 48.02 -(2.8x9.8xsin40)
= 48.02-17.638 = 30.3819 N
Acceleration of the system a = F /(m1+m2)
= 30.3819 /(2.8+4.9)
= 3.945 m/s 2
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