A weight is attached to the end of a spring. Its height after t seconds is given by the equationh(t)=5−2sin(72π(t+1)).When does the weight first reach its maximum height? Give an exact answer.When t=□ seconds
Q. A weight is attached to the end of a spring. Its height after t seconds is given by the equationh(t)=5−2sin(72π(t+1)).When does the weight first reach its maximum height? Give an exact answer.When t=□ seconds
Find Maximum Height: The maximum height is reached when the sine function is at its maximum value, which is 1.
Find Value of t: We need to find the value of t for which sin(72π(t+1)) equals 1.
Set Sine Function Equal: Set the inside of the sine function equal to π/2, because sin(π/2)=1.
Solve for t:72π(t+1)=2π. Now solve for t.
Multiply by 7: Multiply both sides by 7 to get rid of the denominator: 2π(t+1)=27π.
Divide by 2π: Divide both sides by 2π to solve for (t+1): t+1=4π7π.
Simplify Right Side: Simplify the right side: t+1=47.
Subtract 1: Subtract 1 from both sides to solve for t: t=47−1.
Convert to Common Denominator: Convert 1 to 44 to have a common denominator: t=47−44.