# Project #91974 - phys

1)The figure below shows an object of mass

m1 = 1.3 kg

on an inclined surface. The angle of the inclined surface is

θ = 35°

with the horizontal. The object m1 is connected to a second object of mass m2 = 2.45 kg

on a horizontal surface below an overhang that is formed by the inclined surface. Further, an external force of magnitude

Fext = 17 N

is exerted on the object with mass m1. We observe both objects accelerate. Assuming the surfaces and the pulley are frictionless, and the pulley and the connecting string are massless, what is the tension in the string connecting the two objects?
N

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2)In the figure below, assume
m1 = 10 kg
and
m2 = 5.9 kg.
The coefficient of static friction between the object on the table and the table surface is 0.8 and the coefficient of kinetic friction is 0.4. The system is set in motion with the object of mass m2 moving downward. What is the acceleration of the object of mass m1?
 magnitude: m/s2 direction :

--------------------------
3)Two crates of masses
m1 = 9 kg
and
m2 = 14 kg
are connected by a massless string and placed on a rough surface. A force of
F = 99 N
is exerted on m2, as illustrated in the figure below. The coefficient of kinetic friction between each crate and the surface is
μk = 0.3.
What is the tension on the string between the two crates?
N

 Subject Science Due By (Pacific Time) 11/08/2015 04:00 pm
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