Answered

Which of the following can be a centripetal force?a.
friction
c.
tension
b.
gravity
d.
all of the above

Answer :

extrastruggling
The answer is D
Friction acts as a centripetal force in the case of a car turning. The friction creates a tangential force allowing the car to turn. 
Tension can act as a centripetal force in the case of circles. Such as swinging a mass on a string, the tension force allows it to move in a curved path. 
Gravity acts as a centripetal force in the case of satellites. The gravity keeps the satellite within the orbit. 

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