Done The picture at the right shows a ball held stationary in place by a triangu

Question

Done The picture at the right shows a ball held stationary in place by a triangular incline and a square block (which is glued to the incline). The center of the ball's mass is marked by a dot. Refer to this picture for the next few questions. Which of the vectors shown below could represent the force exerted BY the square block ON the ball? Which of the vectors shown below could represent the force exerted BY the triangular incline ON the ball? How do we know that the ball in the picture is in equilibrium? There are no forces acting on the ball. a. b. The upward forces on the ball are greater than the downward weight of the ball. There is no net force on the ball because all the forces acting on the ball balancoe (cancel) out d. The acceleration of the ball is in the opposite direction of the velocity. How many liters are in I cubic meter? o b. 10' c10 d 10 How best can we convert kg/m into g/cm? 10 l kg 10*

Explanation / Answer

Normal force always acts normal to the surfaces in contact.

So

1) B

2) B

3) C (net of all the forces will be zero)

4) C ( in one cubic meter there are 1000 lit)

5) B

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