m=2πkT2An experimental physicist uses the given equation to model the relationship between an m kilogram mass connected to a spring with spring constant, k, and a period of oscillation, T. If the physicist changes the mass and the period of oscillation drops to 41 of its original value, which of the following describes the change in mass?Choose 1 answer:(A) The new mass is 21 of the original mass.(B) The new mass is 41 of the original mass.(C) The new mass is 161 of the original mass.(D) The new mass is quadrupled.
Q. m=2πkT2An experimental physicist uses the given equation to model the relationship between an m kilogram mass connected to a spring with spring constant, k, and a period of oscillation, T. If the physicist changes the mass and the period of oscillation drops to 41 of its original value, which of the following describes the change in mass?Choose 1 answer:(A) The new mass is 21 of the original mass.(B) The new mass is 41 of the original mass.(C) The new mass is 161 of the original mass.(D) The new mass is quadrupled.
Denote Original Mass and Period: Let's denote the original mass as m and the original period of oscillation as T. According to the given equation, we have:m=2πkT2
Calculate New Period: Now, let's denote the new period of oscillation as T′. Given that T′ is one-fourth of the original period T, we can write:T′=T/4
Find New Mass with New Period: We need to find the new mass m′ using the same equation with the new period T′. So we have:m′=2πk(T′)2
Substitute New Period: Substitute T′=4T into the equation for m′:m′=2πk(4T)2
Simplify Equation: Simplify the equation by squaring 4T:m′=2πk(16T2)
Compare New Mass with Original Mass: Now, we can compare the new mass m′ with the original mass m. We can see that m′ is 161 of m because (T2/16) is 161 of T2: m′=16m
Conclusion: Therefore, the new mass is 161 of the original mass. This corresponds to answer choice (C).