A 0.539-kg mass is attached to a horizontal spring with k = 109 N/m. The mass sl
ID: 2139710 • Letter: A
Question
A 0.539-kg mass is attached to a horizontal spring with k = 109 N/m. The mass slides across a frictionless surface. The spring is stretched 25.3 cm from equilibrium, and then the mass is released from rest.
a) Find the mechanical energy of the system.
3.4885 J
b) Find the speed of the mass when it has moved 2.89 cm.
c) Find the maximum speed of the mass.
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A 0.539-kg mass is attached to a horizontal spring with k = 109 N/m. The mass slides across a frictionless surface. The spring is stretched 25.3 cm from equilibrium, and then the mass is released from rest. Find the mechanical energy of the system. 3.4885 J Find the speed of the mass when it has moved 2.89 cm. Find the maximum speed of the mass.
Explanation / Answer
0.5kx^2=3.4885joules;
b) speed=0.5mv^2+0.5k(0.2241^2)=3.4885
v=1.6698m/s;
c) o.5mv^2=3.4885;
v=3.5978m/sec
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