Answer to Question #198058 in Quantum Mechanics for Yotamu

Question

Uncle Steve pulls on a rope attached to a trolley with a force of 75N. The rope makes and angle of 45 with the horizontal. Compute the effective force tending to pull the trolley along the horizontal, compute the force tending to lift the trolley

Answer 1

Force of pulling, $F=75\space N$

Angle with the horizontal, $\theta=45\degree$

Force along horizontal = $F\cos\theta=75\cos45\degree=53.03\space N$

Force tending to pull = Force along y direction $=F\sin\theta$

$=75\sin45\degree=53.03\space N$