Apendulum is constructed from a 5.9 kg mass attached to a strong cord of length 1.6 m also attached to a ceiling. originally hanging vertically, the mass is pulled aside a small distance of 7.1 cm and released from rest. while the mass is swinging the cord exerts an almost-constant force on it. for this problem, assume the force is constant as the mass swings. how much work in j does the cord do to the mass as the mass swings a distance of 8.0 cm?

What is the radius of the circular path ofa charged particle in a magnetic field?

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?