need help solving these 7. A kg slides ramp. The ramp is 1 m in length and incli

Question

need help solving these

7. A kg slides ramp. The ramp is 1 m in length and inclined at an angle of 300 as shown in crate down a experiences a constant friction force of the Figure. The crate starts from rest at the top, leaves magnitude 5 N, and continues to move a short distance on the horizontal floor after it ramp methods to determine the speed of the crate at the bottom of the ramp. force of 1. Use energy foor if it continues to experience a friction 2. How far does the crate slide on the horizontal magnitude 5 N? 300

Explanation / Answer

we are using conservation of energy to solve

Thus equation is KEi+PEi+Wnc=KEf+PEf

here KEi=0,PEf=0

d=1m, m=3kg Fk=5

here KE is kinetic energy,PE is potential Energy,Wnc is work done by conservative forces

mg(dsin(30))+Fk*d=0.5 m*v2

3*9.81*1*sin(30)+5*1=0.5*1* v2

Vf=2.54m/s

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