A toy rocket is launched straight up by using a spring.?
The rocket is initially pressed down on the spring so that the spring is compressed by 9 cm. If the spring constant is 830 n/m and the mass of the rocket is 50 g, how high will the rocket go?
I used the formula fs=kx to find the force and then put that into F=ma to find the acceleration of the rocket, but I am not sure where to go now to get the missing pieces that I need for the kinematics, please help and explain!
- civil_av8rLv 73 years agoFavorite Answer
Do you have to use kinematics or can you use energy conservation?
SPE = gpe
1/2*k*x^2 = m*g*h
h = k*x^2/(2*m*g)
Plug in numbers with cm converted to m and g converted to kg
h = 6.85 m
That's what I got