An object in uniform circular motion has a velocity

	1.	Zero
	2.	directed outward fromthe center of rotation
	3.	directed along the tangent line
	4.	directed inward,toward the center ofrotation

What kind apparatus was used to perform "Centripetal force " lab experiment

	1.	centripetal force apparatus with variable speed electric motor.
	2.	centripetal force apparatus driven by magnetic force
	3.	Manual centripetal force apparatus
	4.	Belt driven Centripetal force apparatus

ffthe mass of an object in uniform circular motion in doubled but speed and radius remained the same, then the required centripetal force is:

	1.	the same
	2.	twice as large
	3.	four times as large
	4.	half as large

Which of the following would increase the speed of an object in the uniform circular motion ?

	1.	use another spring with a smaller spring constant
	2.	Increase the radius
	3.	Increase the Friciton
	4.	Decrease the radius

Which of the following is the unit for centripetal acceleration?

	1.	m/s2
	2.	cm/s2
	3.	kgm/s
	4.	N (Newton)

In order tofind the centripetal force by a direct measurement you need

	1.	add weights to the hangeruntil the bob is directly over the pointer
	2.	the bob attached to a stringshouldperformexactly25revolution
	3.	addweights on the top of the bob by inserting slotted masses of 100g or more
	4.	the bob attached to a string should performat least25revolution