First slide

Different types of Forces

Question

In Figure, a sphere of mass 2kg is suspended from the ceiling of a car which is initially at rest. Tension in the string in this situation is T₁. The car now moves to the right with a uniform acceleration and the tension in the string is now T₂, then: (Take g = 10 m/s²)

Easy

A

T₁=T₂=20N
B

T₁=20N,T₂>20N
C

T₁ = 20 N. T₂ < 20 N
D

T₁ < 20 N, T₂ = 20 N

Solution

$T_{1} = 2 g = 20 N and T_{2} > 20 N as T_{2} \sin θ = 2 g$

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