help An aluminum block of mass = 4.15 kg and a copper block of mass m2 = 8.65 kg

Question

help

An aluminum block of mass = 4.15 kg and a copper block of mass m2 = 8.65 kg are connected by a light string over a frictionless pulley. They sit on a steel surface as shown in the figure below, where theta = 32.5 degree . (See the table below for the appropriate coefficients of friction). When they are released from rest, will they start to move? Yes No If the blocks move, determine the magnitude of their acceleration. (If the blocks do not move, enter 0.) m/s2 If the blocks move, determine the magnitude of the tension in the string. (If the blocks do not move, enter 0.) N If the blocks do not move, determine the sum of the magnitudes of the forces of friction acting on the blocks. (If the blocks move, enter 0.) N

Explanation / Answer

Here

Force of Friction = 4.15*9.8*0.61 + 0.53*9.8*8.65*Cos(32.5 degree)

= 62.7 N

Force in Downward Direction = 8.65*9.8*Sin(32.5 degree)

= 45.54 N

So it will Not move

NO

=================================

As it does not move

0

==========================

As it does not move

0

========================

As it does not move

0

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