Subject: Physics    / General Physics
A block of mass m1 = 1 kg rests on a table with which it has a coefficient of friction µ = 0.51. A string attached to the block passes over a pulley to a block of mass m3 = 3 kg. The pulley is a uniform disk of mass m2 = 0.6 kg and radius 15 cm. As the mass m3 falls, the string does not slip on the pulley.
1)With what acceleration does the mass m3 fall?
2)what is the tension in the horizontal string, T1?
3)What is the tension in the vertical string, T3?

A 0.160-kg baseball traveling 30.0m/s strikes the catcher’s mitt, which, in bringing the ball to rest, recoils backward 11.0cm . What was the magnitude of the average force applied by the ball on the glove?

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