9 9. A 0.25 kg steel ball experiences a net force of 1.15 N as it rolls down a
ramp. What is the acceleration of the ball?
a. 0.29 m/s? b. 0.90 m/s
c. 1.4 m/s? d. 4.6 m/s

What are chlorofluorocarbons and what impact do they have on the atmosphere?

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.