Question

The direction of the centripetal force is always in the same direction

	a.	as the centripetal acceleration vector
	b.	as the velocity vector
	c.	that an object would have if the centripetal acceleration suddenly stopped
	d.	as the direction of motion of the object

In this question, "constant in direction" refers to a fixed direction such as east or west. For uniform circular motion, the acceleration vector is

	a.	changing in magnitude but constant in direction
	b.	constant in magnitude and changing in direction
	c.	constant in both magnitude and direction
	d.	changing in both magnitude and direction

If the velocity of an object moving in a circle doubled, then the centripetal acceleration would become

	a.	twice as much
	b.	half as much
	c.	one-quarter as much
	d.	four times as much

An object of mass m is moving in a circle of a given radius r and a constant speed v. If the mass were to increase, but all else remained constant, then the centripetal acceleration would

	a.	remain constant while the centripetal force would increase
	b.	remain constant and the centripetal force would also remain constant
	c.	increase while the centripetal force would remain constant
	d.	increase and the centripetal force would also increase

Answer 1

* where there is an acceleration, there is . a force hence centripetal force ů. always in the direction of centripetal. acceleration option for uniformi circular motion, centripetal acceleration vector la = 4?) is constant in magnitude but as its direction is always towards center, so direction will be changing with the change in position of object. option 6 centripetal acceleration as we so on making a double, à will become 4 times option @ .. * centripetal acceleration 'a-l doesn't depend upon mass hence it will remain consist but centripetal face (F= mas will increase. option @).