4. A 10-kg mass is attached to a spring having a spring constant of 140 N/m. The mass is started in motion from the equilibrium position with an initial velocity of 1 m/sec in the upward direction and with an applied external force F(t) = 5 sin t. Find the subsequent motion of the mass if the force due to air resistance is -90ù N.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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You can use methods such as variation of parameters, application of exponential shift theorem, and evaluation of some inverse differential operators.

Read and analyze each word problem and give what is/are required. Write the detailed
solution
If possible, express your final answer in the form u(t)= Rcos(@,t – 8).
4. A 10-kg mass is attached to a spring having a spring constant of 140 N/m. The mass is
started in motion from the equilibrium position with an initial velocity of 1 m/sec in the
upward direction and with an applied external force F(f) = 5 sin t. Find the subsequent
motion of the mass if the force due to air resistance is -90ù N.
Transcribed Image Text:Read and analyze each word problem and give what is/are required. Write the detailed solution If possible, express your final answer in the form u(t)= Rcos(@,t – 8). 4. A 10-kg mass is attached to a spring having a spring constant of 140 N/m. The mass is started in motion from the equilibrium position with an initial velocity of 1 m/sec in the upward direction and with an applied external force F(f) = 5 sin t. Find the subsequent motion of the mass if the force due to air resistance is -90ù N.
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