A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to__________?

A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to__________?

A. Prop him up if he falls
B. Spread out his weight and reduce the pressure on the rope
C. Add extra weight to keep the rope tightly stretched
D. To keep the Center of gravity always above vertically above the rope

Steering of a car involves?

Steering of a car involves?

A. A single force
B. Two forces acting in the same direction
C. Two forces acting along different lines and in opposite direction.
D. A pair of forces acting along the same line and in opposite direction