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Nt1310 Unit 4

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Nt1310 Unit 4
1) Block B in Fig. 6-31 weighs 603 N. The coefficient of static friction between block and table is 0.32; angle θ is 33°; assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary.

Fig. 6-31
A)150 N B)175 N C)125 N D)200 N

2) In Fig. 6-33, two blocks are connected over a pulley. The mass of block A is 7.8 kg and the coefficient of kinetic friction between A and the incline is 0.13. Angle θ of the incline is 44°. Block A slides down the incline at constant speed. What is the mass of block B?

Fig. 6-33

A)4.69g B)5.69g C)5.0g D)6.0g

3) In the figure here, block 1 of mass 2.0 kg and block 2 of mass 2.9 kg are connected by a string of negligible mass

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