Please help!
A string is tied to a 4.4 kg block and a 120 g hanging bucket. Students add 20 g washers one at a time to the bucket. The students are unaware that the coefficient of static friction for the block on the table is 0.42.
A) What is the maximum force of static friction for the block?
Answer: 18.11 N
B) How many washers can the students add to the bucket without moving the block?
Answer: 86
C) The coefficient of kinetic friction is 0.34. Calculate the acceleration of the block when the final washer is added to the bucket and the objects start to move.
The diagram shows a block on the table sitting horizontally with a pulley holding the bucket vertically with one string. The block and the bucket are tied with one string.
I just didn't get C).
Answer (2)
To solve for the acceleration of the block when the final washer is added, we can use Newton's second law of motion , as well as the coefficients of static and kinetic friction. ;
To find the acceleration when the last washer is added, we first calculate the gravitational force on the bucket, then the force of kinetic friction acting on the block. Finally, we apply Newton's second law to determine that the acceleration is approximately 0.55 m/s².
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