You fall, while skiing, and one ski (of weight W) loosens and slides down an icy slope (assume no friction), which makes an angle ? with the horizontal. The force that pushes it down along the hill is
A) W cos $\theta$.
B) W sin $\theta$.
C) W.
D) zero; it moves with constant velocity.
E) W tan $\theta$.

Question

Quizplus · Accepted Answer

The force that pushes the ski down the slope is the component of its weight acting parallel to the slope. This component is given by $W \sin(\theta)$, where $W$ is the weight of the ski and $\theta$ is the angle of the slope with the horizontal.

You Fall, While Skiing, and One Ski (Of Weight W) θ\thetaθ

You Fall, While Skiing, and One Ski (Of Weight W) $\theta$