a 5 kg mass 20 kg mass are connected by a light inextensible string which passes over a light frictionless pulley initially the 5 kg mass is held stationary on a horizontal surface whilethe 20 kg mass hangs vertically downwards, 6m above the ground. a, calculate the acceleration of the 20kg mass

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

Determine the moment of the force f about an axis extending between a and c. express the result as a cartesian vector. a is at the origin, c is at (4,3,0) and f = (4i + 12j -3k) lb coming out of b (4,3,-2).

An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station