Question 6

An object of mass 200 g moves in a circle on a horizontal frictionless surface, attached by a cord 40 cm long to a pin set in the surface. If the speed of the object is 6.0 m/s, what is the tension in the cord?

• A.    3.0 N
• B.    7.2 N
• C.    18 N
• D.    72 N
• E.    90 N

Question 7 ... Up to Unit 2 Table of Contents