Home / Unit-4 Dynamics-2 / Question
MCQ
If the radius of a circular path is doubled keeping the speed constant, the centripetal force becomes:
Unit-4 Dynamics-2
A Double
B Four times
C Half
D Unchanged
Explanation

F is inversely proportional to r, so doubling the radius halves the force.

Related MCQs

For a satellite orbiting the Earth, the centripetal force is supplied by:
Unit-4 Dynamics-2 View
A body of mass 3 kg moves in a circle of radius 1 m with a speed of 2 m/s. The centripetal force is:
Unit-4 Dynamics-2 View
For a roller coaster to stay on the track while completing a vertical loop of radius 3.6 m, the minimum speed at the top is (g = 10 m/s^2):
Unit-4 Dynamics-2 View
The time period of revolution of a geostationary satellite is:
Unit-4 Dynamics-2 View
According to Newton's third law, the reaction of centripetal force is:
Unit-4 Dynamics-2 View
The orbital speed of a satellite does NOT depend on:
Unit-4 Dynamics-2 View