Two masses of 8 kg and 12 kg are tied to each end of a string passing over a massless and frictionless pulley. Find the resulting acceleration of each mass.
A 160 cm tall person lies on a light ( massless) board which is supported by two weighing scales, one under the feet and one beneath the top of the head. The two scales read, respectively ,29.4 and 32.8 kg. Where is the center of gravity of this person?
Where must a 500 N weight be hang on a uniform beam with a length of 5 m and weighing 150 N so that a woman at one end of the beam carries only one fourth as much load as a man at the other end?
Compute the direction and magnitude of the resultant of the following system of coplanar and concurrent forces; 20 N, 40 N, 25N, 42N, and 12 N making an angle of 30