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In Fig. 8-53, a block of mass m ! 2.5 kg slides head on
Chapter , Problem 55(choose chapter or problem)
In Fig. 8-53, a block of mass m ! 2.5 kg slides head on into a spring of spring constant k ! 320 N/m. When the block ILW stops, it has compressed the spring by 7.5 cm. The coefficient of kinetic friction between block and floor is 0.25. While the block is in contact with the spring and being brought to rest, what are (a) the work done by the spring force and (b) the increase in thermal energy of the blockfloor system? (c) What is the blocks speed just as it reaches the spring? 0 Figure 8-53 55.
Questions & Answers
QUESTION:
In Fig. 8-53, a block of mass m ! 2.5 kg slides head on into a spring of spring constant k ! 320 N/m. When the block ILW stops, it has compressed the spring by 7.5 cm. The coefficient of kinetic friction between block and floor is 0.25. While the block is in contact with the spring and being brought to rest, what are (a) the work done by the spring force and (b) the increase in thermal energy of the blockfloor system? (c) What is the blocks speed just as it reaches the spring? 0 Figure 8-53 55.
ANSWER:Step 1 of 4
Given data:
The mass of the block is m = 2.5 kg.
The spring constant is k = 320 N/m.
The compression in the spring is x =7.5 cm = 0.075 m.
The coefficient of kinetic friction between the block and floor is ?k= 0.25.