A 2 kg mass on a frictionless inclined surfaceis connected to a 2.1 kg mass. The pulley is massless and
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A 2 kg mass on a frictionless inclined surfaceis connected to a 2.1 kg mass. The pulley is massless and

[From: ] [author: ] [Date: 11-09-16] [Hit: ]
string is massless and does not stretch.2.of 7.2 N,tion of only 4.7 m/s2.......
A 2 kg mass on a frictionless inclined surface
is connected to a 2.1 kg mass. The pulley is
massless and frictionless, and the connecting
string is massless and does not stretch. The
2.1 kg mass is acted upon by an upward force
of 7.2 N, and thus has a downward accelera-
tion of only 4.7 m/s2.
The acceleration of gravity is 9.8 m/s2 .

What is the tension in the connecting
string?
Answer in units of N


What is the angle theta?
answer in degrees.

-
a = [2.1*g - T - 7.2]/2.1

T = 2.1(g - a) - 7.2 = 3.51 N

Extra credit:
The angle of the incline is 17.49° down toward the pulley
1
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