Questions
A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m / s. A bob is suspended from the roof of the car by a light wire of length 1.0 m. The angle made by the wire with the vertical is
detailed solution
Correct option is C
Let θ is the angle made by the wire with the vertical. ∴ tanθ=v2rg Here, v=10 m/s,r=10 m,g=10 m/s2 ∴ tanθ=(10 m/s)210 m10 m/s2=1 θ=tan-1(1)=π4Talk to our academic expert!
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A circular road of radius R is banked for a speed v = 40 km/hr. A car of mass m attempts to go on the circular road, the friction coefficient between the tyre and road is negligible:
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